2025 Vol. 8, No. 3
Article Contents

Ge Feng, Guo-hui Lu, Jiu-chen Liu, Nan Gai, Hui-lun Chen, Qi-feng Tang, Yong-liang Yang, 2025. Occurrence, migration, and risk assessment of PPCPs in water bodies and sediments of river-type drinking water sources in eastern China, China Geology, 8, 514-525. doi: 10.31035/cg2025025
Citation: Ge Feng, Guo-hui Lu, Jiu-chen Liu, Nan Gai, Hui-lun Chen, Qi-feng Tang, Yong-liang Yang, 2025. Occurrence, migration, and risk assessment of PPCPs in water bodies and sediments of river-type drinking water sources in eastern China, China Geology, 8, 514-525. doi: 10.31035/cg2025025

Occurrence, migration, and risk assessment of PPCPs in water bodies and sediments of river-type drinking water sources in eastern China

More Information
  • Pharmaceuticals and personal care products (PPCPs) are receiving attention as emerging pollutants due to their extensive applications and persistent emissions. The Qiantang River Basin, a representative region in eastern China that relies on surface water for drinking purposes, experiences the movement and accumulation of PPCPs in its water and sediment, which can directly affect the safety of drinking water in the basin. This study focuses on the Qiantang River Basin’s surface water, sediment, and drinking water to determine the occurrence and potential risks of 31 PPCPs. It aims to address whether PPCPs in the environment could migrate and accumulate, thereby affecting human health. The findings indicated that PPCPs are ubiquitous in various environmental media, with surface and pore water showing distinct spatial distribution characteristics, specifically, concentrations escalated with urban scale expansion, indicating that domestic sewage discharge is the primary source of PPCP input. Bisphenol A (BPA), ketoprofen (KTP), and diethyltoluamide (DEET) were the primary contaminants. The movement of PPCPs within the surface water-sediment-pore water system was affected by various circumstances. Substances like Sulfamethoxazole (SMX) (RQ>103) and KTP (RQ=22.3) present in surface water and sediment pose significant ecological concerns, and KTP and atrazine (ATZ) (0.6<RQ<2.1) also pose a high risk in drinking water. This study performed an extensive analysis of the distribution and risks associated with typical PPCPs in the Qiantang River Basin, offering a scientific foundation and theoretical support for research on the environmental behavior of PPCPs in this area and the development of targeted pollution control strategies.

  • 加载中
  • Acayaba RD, de Albuquerque AF, Ribessi RL, de Aragão Umbuzeiro G, Montagner CC. 2021. Occurrence of pesticides in waters from the largest sugar cane plantation region in the world. Environmental Science and Pollution Research, 28(8), 9824–9835. doi: 10.1007/s11356-020-11428-1.

    CrossRef Google Scholar

    Agunbiade FO, Moodley B. 2016. Occurrence and distribution pattern of acidic pharmaceuticals in surface water, wastewater, and sediment of the Msunduzi River, Kwazulu-Natal, South Africa. Environmental Toxicology and Chemistry, 35(1), 36–46. doi: 10.1002/etc.3144.

    CrossRef Google Scholar

    Ali AM, Rønning HT, Alarif W, Kallenborn R, Al-Lihaibi SS. 2017. Occurrence of pharmaceuticals and personal care products in effluent-dominated Saudi Arabian coastal waters of the Red Sea. Chemosphere, 175, 505–513. doi: 10.1016/j.chemosphere.2017.02.095.

    CrossRef Google Scholar

    Aris AZ, Shamsuddin AS, Praveena SM. 2014. Occurrence of 17α-ethynylestradiol (EE2) in the environment and effect on exposed biota: A review. Environment International, 69, 104–119. doi: 10.1016/j.envint.2014.04.011.

    CrossRef Google Scholar

    Arp HP, Hale S. 2019. REACH: Improvement of Guidance and Methods for the Identification and Assessment of PMT/vPvM Substances Final Report. Umweltbundesamt. https://www.researchgate.net/publication/340935504.

    Google Scholar

    Azuma T, Otomo K, Kunitou M, Shimizu M, Hosomaru K, Mikata S, Ishida M, Hisamatsu K, Yunoki A, Mino Y, Hayashi T. 2019. Environmental fate of pharmaceutical compounds and antimicrobial-resistant bacteria in hospital effluents, and contributions to pollutant loads in the surface waters in Japan. Science of the Total Environment, 657, 476–484. doi: 10.1016/j.scitotenv.2018.11.433.

    CrossRef Google Scholar

    Ben YJ, Hu M, Zhang XY, Wu SM, Wong MH, Wang MY, Andrews CB, Zheng CM. 2020. Efficient detection and assessment of human exposure to trace antibiotic residues in drinking water. Water Research, 175, 115699. doi: 10.1016/j.watres.2020.115699.

    CrossRef Google Scholar

    Benotti MJ, Trenholm RA, Vanderford BJ, Holady JC, Stanford BD, Snyder SA. 2009. Pharmaceuticals and endocrine disrupting compounds in U. S. drinking water. Environmental Science & Technology, 43(3), 597–603. doi: 10.1021/es801845a.

    Google Scholar

    Blair BD, Crago JP, Hedman CJ, Klaper RD. 2013. Pharmaceuticals and personal care products found in the Great Lakes above concentrations of environmental concern. Chemosphere, 93(9), 2116–2123. doi: 10.1016/j.chemosphere.2013.07.057.

    CrossRef Google Scholar

    Bu QW, Wang B, Huang J, Deng SB, Yu G. 2013. Pharmaceuticals and personal care products in the aquatic environment in China: A review. Journal of Hazardous Materials, 262, 189–211. doi: 10.1016/j.jhazmat.2013.08.040.

    CrossRef Google Scholar

    Couto CF, Lange LC, Amaral MCS. 2019. Occurrence, fate and removal of pharmaceutically active compounds (PhACs) in water and wastewater treatment plants—a review. Journal of Water Process Engineering, 32, 100927. doi: 10.1016/j.jwpe.2019.100927.

    CrossRef Google Scholar

    De Caroli Vizioli B, Silva da Silva G, Ferreira de Medeiros J, Montagner CC. 2023. Atrazine and its degradation products in drinking water source and supply: Risk assessment for environmental and human health in Campinas, Brazil. Chemosphere, 336, 139289. doi: 10.1016/j.chemosphere.2023.139289.

    CrossRef Google Scholar

    Dodgen LK, Li J, Parker D, Gan JJ. 2013. Uptake and accumulation of four PPCP/EDCs in two leafy vegetables. Environmental Pollution, 182, 150–156. doi: 10.1016/j.envpol.2013.06.038.

    CrossRef Google Scholar

    Feng L, Cheng YR, Zhang YY, Li ZW, Yu YC, Feng L, Zhang S, Xu LJ. 2020. Distribution and human health risk assessment of antibiotic residues in large-scale drinking water sources in Chongqing area of the Yangtze River. Environmental Research, 185, 109386. doi: 10.1016/j.envres.2020.109386.

    CrossRef Google Scholar

    Gao Y, Li J, Xu N, Ni JR. 2018. Pollution levels and ecological risks of PPCPs in water and sediment samples of Hanjiang River. Environmental Chemistry, 37(8), 1706–1719 (in Chinese with English abstract). doi: 10.7524/j.issn.0254-6108.2018022604.

    CrossRef Google Scholar

    Guo ZN, Wang XS, Xiang SZ, Hu TB, Liu F, Guan XY. 2022. Distribution characteristics of typical antibiotics in reclaimed water infiltration area and influencing factors of groundwater microbial community. Rock and Mineral Analysis, 41(3), 451–462 (in Chinese with English abstract). doi: 10.15898/j.cnki.11-2131/td.202111040163.

    Google Scholar

    Hawash HB, Moneer AA, Galhoum AA, Elgarahy AM, Mohamed WAA, Samy M, El-Seedi HR, Gaballah MS, Mubarak MF, Attia NF. 2023. Occurrence and spatial distribution of pharmaceuticals and personal care products (PPCPs) in the aquatic environment, their characteristics, and adopted legislations. Journal of Water Process Engineering, 52, 103490. doi: 10.1016/j.jwpe.2023.103490.

    CrossRef Google Scholar

    He P, Wu JM, Peng JQ, Wei L, Zhang LP, Zhou QH, Wu ZB. 2022. Pharmaceuticals in drinking water sources and tap water in a city in the middle reaches of the Yangtze River: Occurrence, spatiotemporal distribution, and risk assessment. Environmental Science and Pollution Research, 29(2), 2365–2374. doi: 10.1007/s11356-021-15363-7.

    CrossRef Google Scholar

    Heberer T. 2002. Occurrence, fate, and removal of pharmaceutical residues in the aquatic environment: A review of recent research data. Toxicology Letters, 131(1–2), 5–17. doi: 10.1016/s0378-4274(02)00041-3.

    CrossRef Google Scholar

    Hebig KH, Groza LG, Sabourin MJ, Scheytt TJ, Ptacek CJ. 2017. Transport behavior of the pharmaceutical compounds carbamazepine, sulfamethoxazole, gemfibrozil, ibuprofen, and naproxen, and the lifestyle drug caffeine, in saturated laboratory columns. Science of the Total Environment, 590–591, 708–719. doi: 10.1016/j.scitotenv.2017.03.031.

    Google Scholar

    Hernando M, Mezcua M, Fernandezalba A, Barcelo D. 2006. Environmental risk assessment of pharmaceutical residues in wastewater effluents, surface waters and sediments. Talanta, 69(2), 334–342. doi: 10.1016/j.talanta.2005.09.037.

    CrossRef Google Scholar

    Huang C, Jin B, Han M, Yu Y, Zhang G, Arp HPH. 2021. The distribution of persistent, mobile and toxic (PMT) pharmaceuticals and personal care products monitored across Chinese water resources. Journal of Hazardous Materials Letters, 2, 100026. doi: 10.1016/j.hazl.2021.100026.

    CrossRef Google Scholar

    Jiang XS, Qu YX, Liu LQ, He Y, Li WC, Huang J, Yang HW, Yu G. 2019. PPCPs in a drinking water treatment plant in the Yangtze River Delta of China: Occurrence, removal and risk assessment. Frontiers of Environmental Science & Engineering, 13(2), 27. doi: 10.1007/s11783-019-1109-4.

    CrossRef Google Scholar

    Khan HK, Rehman MYA, Junaid M, Lv M, Yue LX, Haq IU, Xu N, Malik RN. 2022. Occurrence, source apportionment and potential risks of selected PPCPs in groundwater used as a source of drinking water from key urban-rural settings of Pakistan. Science of the Total Environment, 807, 151010. doi: 10.1016/j.scitotenv.2021.151010.

    CrossRef Google Scholar

    Kim SC, Carlson K. 2007. Temporal and spatial trends in the occurrence of human and veterinary antibiotics in aqueous and river sediment matrices. Environmental Science & Technology, 41(1), 50–57. doi: 10.1021/es060737++.

    CrossRef Google Scholar

    Kot-Wasik A, Jakimska A, Śliwka-Kaszyńska M. 2016. Occurrence and seasonal variations of 25 pharmaceutical residues in wastewater and drinking water treatment plants. Environmental Monitoring and Assessment, 188(12), 661. doi: 10.1007/s10661-016-5637-0.

    CrossRef Google Scholar

    Lei BL, Huang SB, Wang DH, Luo JP, Wang ZJ, Liu C. 2008. Present state of six estrogens in the sediment of Wenyuhe River. Environmental Science, 29(9), 2419–2424 (in Chinese with English abstract). doi: 10.13227/j.hjkx.2008.09.029.

    CrossRef Google Scholar

    Leung HW, Jin L, Wei S, Tsui MMP, Zhou BS, Jiao LP, Cheung PC, Chun YK, Murphy MB, Lam PKS. 2013. Pharmaceuticals in tap water: Human health risk assessment and proposed monitoring framework in China. Environmental Health Perspectives, 121(7), 839–846. doi: 10.1289/ehp.1206244.

    CrossRef Google Scholar

    Li L, Zhao XL, Liu D, Song K, Liu Q, He YJ. 2021. Occurrence and ecological risk assessment of PPCPs in typical inflow rivers of Taihu lake, China. Journal of Environmental Management, 285, 112176. doi: 10.1016/j.jenvman.2021.112176.

    CrossRef Google Scholar

    Lin K, Wang R, Han TZ, Tan LJ, Yang X, Wan MM, Chen YS, Zhao T, Jiang S, Wang JT. 2023. Seasonal variation and ecological risk assessment of Pharmaceuticals and Personal Care Products (PPCPs) in a typical semi-enclosed bay—The Bohai Bay in northern China. Science of the Total Environment, 857, 159682. doi: 10.1016/j.scitotenv.2022.159682.

    CrossRef Google Scholar

    Liu JL, Wong MH. 2013. Pharmaceuticals and personal care products (PPCPs): A review on environmental contamination in China. Environment International, 59, 208–224. doi: 10.1016/j.envint.2013.06.012.

    CrossRef Google Scholar

    Liu M, Yin HW, Wu Q. 2019. Occurrence and health risk assessment of pharmaceutical and personal care products (PPCPs) in tap water of Shanghai. Ecotoxicology and Environmental Safety, 183, 109497. doi: 10.1016/j.ecoenv.2019.109497.

    CrossRef Google Scholar

    Liu N, Jin XW, Wang YY, Lv YB, Yang Q. 2015. Pharmaceuticals and personal care products(PPCPs) caused reproductive toxicity in surface water of China: A review. Asian Journal of Ecotoxicology, 10(6), 1–12 (in Chinese with English abstract). doi: 10.7524/AJE.1673-5897.20150323014.

    CrossRef Google Scholar

    Mendes FS, Cruz CEM, Martins RN, Prates Ramalho JP, Martins LFG. 2023. On the diffusion of ketoprofen and ibuprofen in water: An experimental and theoretical approach. The Journal of Chemical Thermodynamics, 178, 106955. doi: 10.1016/j.jct.2022.106955.

    CrossRef Google Scholar

    Meng T, Cheng W, Wan T, Wang M, Ren JH, Li YK, Huang C. 2021. Occurrence of antibiotics in rural drinking water and related human health risk assessment. Environmental Technology, 42(5), 671–681. doi: 10.1080/09593330.2019.1642390.

    CrossRef Google Scholar

    Mukhopadhyay A, Duttagupta S, Mukherjee A. 2022. Emerging organic contaminants in global community drinking water sources and supply: A review of occurrence, processes and remediation. Journal of Environmental Chemical Engineering, 10(3), 107560. doi: 10.1016/j.jece.2022.107560.

    CrossRef Google Scholar

    Nozaki K, Tanoue R, Kunisue T, Tue NM, Fujii S, Sudo N, Isobe T, Nakayama K, Sudaryanto A, Subramanian A, Bulbule KA, Parthasarathy P, Tuyen LH, Viet PH, Kondo M, Tanabe S, Nomiyama K. 2023. Pharmaceuticals and personal care products (PPCPs) in surface water and fish from three Asian countries: Species-specific bioaccumulation and potential ecological risks. Science of the Total Environment, 866, 161258. doi: 10.1016/j.scitotenv.2022.161258.

    CrossRef Google Scholar

    Padhye LP, Yao H, Kung’u FT, Huang CH. 2014. Year-long evaluation on the occurrence and fate of pharmaceuticals, personal care products, and endocrine disrupting chemicals in an urban drinking water treatment plant. Water Research, 51, 266–276. doi: 10.1016/j.watres.2013.10.070.

    CrossRef Google Scholar

    Petrović M, Škrbić B, Živančev J, Ferrando-Climent L, Barcelo D. 2014. Determination of 81 pharmaceutical drugs by high performance liquid chromatography coupled to mass spectrometry with hybrid triple quadrupole–linear ion trap in different types of water in Serbia. Science of the Total Environment, 468–469, 415–428. doi: 10.1016/j.scitotenv.2013.08.079.

    Google Scholar

    Ren HY, Ji SL, Liu ZP, Wang D. 2006. Isolation, identification of 17α-ethynylestradiol-degrading strain and its degradation characteristics. Environmental Science, 27(6), 1186–1190 (in Chinese with English abstract). doi: 10.13227/j.hjkx.2006.06.029.

    CrossRef Google Scholar

    Shen J, Li XY, Wang XZ, Feng JM, He XJ, Jiang SY, Zhou AL, Ouyang XY. 2020. Study on the release potential of BPA and steroid estrogens in the sediments of Erhai Lake, a typical plateau lake of China. Bulletin of Environmental Contamination and Toxicology, 105(6), 882–891. doi: 10.1007/s00128-020-03040-3.

    CrossRef Google Scholar

    Shi JY, Dong YB, Shi YY, Yin TT, He W, An TY, Tang YL, Hou XW, Chong SJ, Chen DN, Qin KJ, Lin H. 2022. Groundwater antibiotics and microplastics in a drinking-water source area, northern China: Occurrence, spatial distribution, risk assessment, and correlation. Environmental Research, 210, 112855. doi: 10.1016/j.envres.2022.112855.

    CrossRef Google Scholar

    da Silva BF, Jelic A, López-Serna R, Mozeto AA, Petrovic M, Barceló D. 2011. Occurrence and distribution of pharmaceuticals in surface water, suspended solids and sediments of the Ebro river basin, Spain. Chemosphere, 85(8), 1331–1339. doi: 10.1016/j.chemosphere.2011.07.051.

    CrossRef Google Scholar

    Song Z, Zhang XB, Ngo HH, Guo WS, Wen HT, Li CC. 2019. Occurrence, fate and health risk assessment of 10 common antibiotics in two drinking water plants with different treatment processes. Science of the Total Environment, 674, 316–326. doi: 10.1016/j.scitotenv.2019.04.093.

    CrossRef Google Scholar

    Su C, Cui Y, Liu D, Zhang H, Baninla Y. 2020. Endocrine disrupting compounds, pharmaceuticals and personal care products in the aquatic environment of China: Which chemicals are the prioritized ones? Science of the Total Environment, 720, 137652. doi: 10.1016/j.scitotenv.2020.137652.

    Google Scholar

    Subramanian A, Saravanan M, Rajasekhar B, Chakraborty S, Sivagami K, Tamizhdurai P, Mangesh VL, Selvaraj M, Kumar NS, Al-Fatesh AS. 2023. Comparative risk assessment studies estimating the hazard posed by long-term consumption of PPCPs in river water. Food and Chemical Toxicology, 182, 114169. doi: 10.1016/j.fct.2023.114169.

    CrossRef Google Scholar

    Sun J, Luo Q, Wang DH, Wang ZJ. 2015. Occurrences of pharmaceuticals in drinking water sources of major river watersheds, China. Ecotoxicology and Environmental Safety, 117, 132–140. doi: 10.1016/j.ecoenv.2015.03.032.

    CrossRef Google Scholar

    Tang XY, Cui ZG, Bai Y, Su RG. 2021. Indirect photodegradation of sulfathiazole and sulfamerazine: Influence of the CDOM components and seawater factors (salinity, pH, nitrate and bicarbonate). Science of the Total Environment, 750, 141762. doi: 10.1016/j.scitotenv.2020.141762.

    CrossRef Google Scholar

    Tanoue R, Nozaki K, Nomiyama K, Kunisue T, Tanabe S. 2020. Rapid analysis of 65 pharmaceuticals and 7 personal care products in plasma and whole-body tissue samples of fish using acidic extraction, zirconia-coated silica cleanup, and liquid chromatography-tandem mass spectrometry. Journal of Chromatography A, 1631, 461586. doi: 10.1016/j.chroma.2020.461586.

    CrossRef Google Scholar

    Tian YJ, Wu YS, Huang TY, Chen SQ, Zhang JG, Pang Y. 2023. Occurrence of PPCPs in surface water and sediment in China and influencing factors of interactive migration. Journal of Environmental Engineering Technology, 13(2), 585–596 (in Chinese with English abstract). doi: 10.12153/j.issn.1674-991X.20220418.

    CrossRef Google Scholar

    Wang H, Wang H, Feng Y, Liu N, Guo QH, Liu N, Gao S. 2016. Degradation of nitrobenzene with persulfate advanced oxidation process. Environmental Science & Technology, 39(5), 75–79 (in Chinese with English abstract). doi: 10.3969/j.issn.1003-6504.2016.05.015.

    CrossRef Google Scholar

    Wang R, Zhang SW, Cai MH, Zhu JC, Xu ZC, Zheng HY, Xiao KY, Wang F. 2023. Screening triazine herbicides in drinking water in the Yangtze River Delta, China: Occurrence and health risk. Journal of Hazardous Materials Advances, 10, 100277. doi: 10.1016/j.hazadv.2023.100277.

    CrossRef Google Scholar

    Wang YQ, Hu LX, Zhao JH, Han Y, Liu YS, Zhao JL, Yang B, Ying GG. 2022. Suspect, non-target and target screening of pharmaceuticals and personal care products (PPCPs) in a drinking water system. Science of the Total Environment, 808, 151866. doi: 10.1016/j.scitotenv.2021.151866.

    CrossRef Google Scholar

    Wilde ML, Montipó S, Martins AF. 2014. Degradation of β-blockers in hospital wastewater by means of ozonation and Fe2+/ozonation. Water Research, 48, 280–295. doi: 10.1016/j.watres.2013.09.039.

    CrossRef Google Scholar

    Wu QH, Shi HL, Adams CD, Timmons T, Ma YF. 2012. Oxidative removal of selected endocrine-disruptors and pharmaceuticals in drinking water treatment systems, and identification of degradation products of triclosan. Science of the Total Environment, 439, 18–25. doi: 10.1016/j.scitotenv.2012.08.090.

    CrossRef Google Scholar

    Wu XQ, Conkle JL, Gan J. 2012. Multi-residue determination of pharmaceutical and personal care products in vegetables. Journal of Chromatography A, 1254, 78–86. doi: 10.1016/j.chroma.2012.07.041.

    CrossRef Google Scholar

    Wu XQ, Ernst F, Conkle JL, Gan J. 2013. Comparative uptake and translocation of pharmaceutical and personal care products (PPCPs) by common vegetables. Environment International, 60, 15–22. doi: 10.1016/j.envint.2013.07.015.

    CrossRef Google Scholar

    Xu MJ, Huang HT, Li N, Li F, Wang DH, Luo Q. 2019. Occurrence and ecological risk of pharmaceuticals and personal care products (PPCPs) and pesticides in typical surface watersheds, China. Ecotoxicology and Environmental Safety, 175, 289–298. doi: 10.1016/j.ecoenv.2019.01.131.

    CrossRef Google Scholar

    Xu XM, Xu YR, Xu N, Pan BZ, Shu FY, Ni JR. 2023. Bioaccumulation of pharmaceuticals and personal care products (PPCPs) in freshwater pearl mussels Hyriopsis cumingii in Poyang Lake. Marine Pollution Bulletin, 193, 115221. doi: 10.1016/j.marpolbul.2023.115221.

    CrossRef Google Scholar

    Yan CX, Yang Y, Zhou JL, Liu M, Nie MH, Shi H, Gu LJ. 2013. Antibiotics in the surface water of the Yangtze Estuary: Occurrence, distribution and risk assessment. Environmental Pollution, 175, 22–29. doi: 10.1016/j.envpol.2012.12.008.

    CrossRef Google Scholar

    Yao WR, Qi YL, Han YF, Ge JF, Dong YY, Wang JW, Yi YB, Volmer DA, Li SL, Fu PQ. 2024. Seasonal variation and dissolved organic matter influence on the distribution, transformation, and environmental risk of pharmaceuticals and personal care products in coastal zone: A case study of Tianjin, China. Water Research, 249, 120881. doi: 10.1016/j.watres.2023.120881.

    CrossRef Google Scholar

    Zhang M, Shi LQ, Guo JL, Xu DL. 2021. Magnetic properties of sediments and their implications for sedimentary dynamic environment in the middle and lower reaches of the Qiantang River. Marine Geology & Quaternary Geology, 41(2), 181–191 (in Chinese with English abstract). doi: 10.16562/j.cnki.0256-1492.2020062302.

    CrossRef Google Scholar

    Zhang ZH, Chen D, Zhao W, Yuan GL, Li J, Jiao XC. 2023. Environmental levels and degradation behavior of pharmaceuticals and personal care products (PPCPs) in the water environment. Rock and Mineral Analysis, 42(4), 649−666 (in Chinese with English abstract). doi: 10.15898/j.ykcs.202210260207.

    Google Scholar

    Zhu DN, Zhou CS, Li J, Zou SZ, Lu HP, Fan LJ, Lin YS. 2022. Inorganic-organic characteristics and health risk assessment of typical underground river system in southwest China. Rock and Mineral Analysis, 41(3), 463–475 (in Chinese with English abstract). doi: 10.1589/j.cnki.11-2131/td.202201310018.

    Google Scholar

  • 加载中
通讯作者: 陈斌, bchen63@163.com
  • 1. 

    沈阳化工大学材料科学与工程学院 沈阳 110142

  1. 本站搜索
  2. 百度学术搜索
  3. 万方数据库搜索
  4. CNKI搜索

Figures(9)

Tables(2)

Article Metrics

Article views(4) PDF downloads(0) Cited by(0)

Access History

Catalog

    /

    DownLoad:  Full-Size Img  PowerPoint