U.S. Environmental Protection Agency , ORD/NHEERL Atlantic Ecology Division Narragansett, Rhode Island 02882, United States.
Physical Therapy Department University of Rhode Island Kington, Rhode Island 02881, United States.
Environ Sci Technol. 2016 Nov 1;50(21):11437-11451. doi: 10.1021/acs.est.6b03273. Epub 2016 Oct 12.
This Critcal Review evaluates passive sampler uptake of hydrophobic organic contaminants (HOCs) in water column and interstitial water exposures as a surrogate for organism bioaccumulation. Fifty-seven studies were found where both passive sampler uptake and organism bioaccumulation were measured and 19 of these investigations provided direct comparisons relating passive sampler uptake and organism bioaccumulation. Polymers compared included low-density polyethylene (LDPE), polyoxymethylene (POM), and polydimethylsiloxane (PDMS), and organisms ranged from polychaetes and oligochaetes to bivalves, aquatic insects, and gastropods. Regression equations correlating bioaccumulation (C) and passive sampler uptake (C) were used to assess the strength of observed relationships. Passive sampling based concentrations resulted in log-log predictive relationships, most of which were within one to 2 orders of magnitude of measured bioaccumulation. Mean coefficients of determination (r) for LDPE, PDMS, and POM were 0.68, 0.76, and 0.58, respectively. For the available raw, untransformed data, the mean ratio of C and C was 10.8 ± 18.4 (n = 609). Using passive sampling as a surrogate for organism bioaccumulation is viable when biomonitoring organisms are not available. Passive sampling based estimates of bioaccumulation provide useful information for making informed decisions about the bioavailability of HOCs.
本评论评估了水柱状和间隙水中疏水性有机污染物 (HOC) 的被动采样器摄取情况，作为生物积累的替代物。共发现 57 项研究，其中均测量了被动采样器摄取和生物积累情况，其中 19 项研究提供了与被动采样器摄取和生物积累有关的直接比较。比较的聚合物包括低密度聚乙烯 (LDPE)、聚甲醛 (POM) 和聚二甲基硅氧烷 (PDMS)，而生物体范围从多毛类和寡毛类到双壳类、水生昆虫和腹足类。回归方程将生物积累 (C) 和被动采样器摄取 (C) 相关联，以评估观察到的关系的强度。基于被动采样的浓度导致对数-对数预测关系，其中大多数在测量生物积累的一个到两个数量级内。LDPE、PDMS 和 POM 的平均确定系数 (r) 分别为 0.68、0.76 和 0.58。对于可用的原始、未转换数据，C 和 C 的平均比值为 10.8 ± 18.4(n = 609)。当生物监测生物不可用时，将被动采样作为生物积累的替代物是可行的。基于被动采样的生物积累估计为 HOC 的生物可利用性提供了有用的信息，以便做出明智的决策。
