我国地表水和沉积物PPCPs赋存与交互迁移影响因素

Occurrence of PPCPs in surface water and sediment in China and influencing factors of interactive migration

  • 摘要: 药品及个人护理品(PPCPs)作为一类典型的新型污染物,由于被广泛使用和存在“假持久性”,在水环境中经常被检测到,引起全球的广泛关注。沉积物是PPCPs重要的环境蓄积库,被污染的沉积物可成为长期污染源对上覆水造成污染。综述了近年来国内外研究成果,分析了PPCPs在中国七大地区典型地表水和沉积物中的赋存现状,归纳总结了PPCPs自身性质、沉积物组分和环境因素对PPCPs在水-沉积物体系交互迁移的影响。结果表明:1)我国地表水中检测到的PPCPs浓度为未检出(ND)~9 785 ng/L,检出率和浓度较高的PPCPs有20种,浓度最高的为非抗生素类药物的咖啡因(CAF),其次为红霉素(ETM)和磺胺甲噁唑(SMX)。我国七大地区地表水中浓度最高的PPCPs是非抗生素类药物兴奋剂,其在华北、华南、西南和西北地区污染程度较高;其次是抗生素类药物中的大环内酯类和磺胺类,其在东北、华东和华中地区污染程度较高。华北地区地表水中PPCPs污染程度最高,其次为华东地区。2)我国水体沉积物中检测到的PPCPs浓度为ND~3 440 ng/g,检出率和浓度较高的PPCPs有18种,其中浓度最高的是三氯卡班(TCC),其次是土霉素(OTC)和诺氟沙星(NOR)。我国七大地区沉积物中浓度最高的PPCPs是个人护理品抗菌剂,其在华南地区污染程度最高;其次是四环素类和喹诺酮类,其中四环素类在华东、华中和东北地区污染程度较高,喹诺酮类在华北、西北和西南地区污染程度较高。华南地区沉积物中PPCPs污染程度最高,其次为华东地区。3)我国地表水和沉积物中PPCPs浓度在世界范围内处于较高水平。水-沉积物体系的交互迁移主要受PPCPs自身性质和沉积物组分的影响,需要进一步明确沉积物组分和水环境条件等多因素耦合作用下的PPCPs交互迁移机制。

     

    Abstract: Pharmaceuticals and personal care products (PPCPs), as a class of typical new pollutants, are often detected in the water environment due to their widespread use and pseudo-persistence, which has aroused worldwide attention. Sediments are important environmental repositories of PPCPs, and polluted sediments can be regarded as long-term pollution sources to cause the pollution of the overlying water. The research results at home and abroad in recent years were reviewed, the occurrence of PPCPs in typical surface water and sediment in seven regions of China were analyzed, and the effects of PPCPs characteristics, sediment components and environmental factors on the interaction migration of PPCPs in water-sediment system were summarized. The results showed as follows:1) The concentration of PPCPs detected in surface water in China ranged from undetected (ND) to 9 785 ng/L. There were 20 kinds of PPCPs with high detection rates and concentrations. The highest concentration was with caffeine (CAF), a non-antibiotic drug, followed by erythromycin (ETM) and sulfamethoxazole (SMX). PPCPs with the highest pollution concentration in the surface water of seven regions of China were non-antibiotic stimulants, which were highly polluted in North China, South China, and Southwest and Northwest, followed by macrolides and sulfonamides in antibiotics which were highly polluted in Northeast, East China and Central China. The highest level of PPCPs pollution in surface water was found in North China, followed by East China. 2) The concentration of PPCPs detected in sediments in China was ND-3 440 ng/g. There were 18 kinds of PPCPs with high detection rates and concentrations, among which triclocarban (TCC) had the highest concentration, followed by oxytetracycline (OTC) and norfloxacin (NOR). PPCPs with the highest pollution concentration in the sediments of seven regions of China were personal care antibacterial agents, with the highest pollution degree in South China, followed by tetracycline and quinolones. Tetracycline pollution degree was higher in East China, Central China and Northeast, and quinolones pollution degree was higher in north China, Northwest and Southwest. The pollution degree of PPCPs in sediments in South China was the highest, followed by East China. 3) PPCPs concentrations in surface water and sediments in China were at a higher level worldwide. The interaction migration of water-sediment system was mainly affected by the nature of PPCPs and sediment components, and the interaction migration mechanism of PPCPs under the coupling effect of sediment components and water environment conditions needed to be further clarified.

     

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