Prevalence and potential for biological effects of several chemicals of interest in Lake Superior tributaries

IF 2.5 3区 环境科学与生态学 Q3 ENVIRONMENTAL SCIENCES
Sophia LaFond-Hudson , Matthew A. Pronschinske , Sarah M. Elliott , Steven R. Corsi
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引用次数: 0

Abstract

Lake Superior is typically assumed to have excellent water quality, but its tributaries have been understudied for contaminants relative to other Great Lakes. This study monitored polycyclic aromatic hydrocarbons (PAHs), alkylphenols (AP) and alkylphenol ethoxylates (APEs), bisphenols, and neonicotinoid pesticides in 18 sites on 17 United States tributaries to Lake Superior in 2022. Contaminants were analyzed from 54 surface water and 17 stream bed sediment samples. PAHs were the most prevalent contaminant class. Among 17 PAHs in 17 samples (289 instances), 71 % were positive detections. Surface water samples were not analyzed for PAHs. Next, among 4 APs and APEs analyzed, 35 % of sediment sample instances and 21 % of instances in 54 water samples were positive detections. Bisphenol analogues were detected in 2 % of sediment sample instances and 4 % of water sample instances. Bisphenol A (BPA) was not quantified due to field blank contamination, but bisphenol AF (BPAF), bisphenol E (BPE), bisphenol F (BPF), and bisphenol S (BPS) were detected in environmental samples. Neonicotinoids were detected in 0.5 % of sediment sample instances and 0.4% of water samples instances. Low detection frequencies for contaminants precluded analyses with watershed land use characteristics, but four sites (Tischer Creek, Miller Creek, Carp River and Iron River) emerged as locations with relatively elevated contaminant concentrations. Comparison of concentrations with ToxCast and other water quality guidelines suggested potential for biological effects from some samples. This study provides a baseline of low contaminant prevalence in Lake Superior tributaries while identifying a few locations that may warrant further monitoring.
苏必利尔湖支流几种重要化学物质的流行及其潜在生物效应
苏必利尔湖通常被认为具有优良的水质,但相对于其他大湖,对其支流的污染物研究不足。该研究监测了2022年美国苏必利尔湖17条支流18个地点的多环芳烃(PAHs)、烷基酚(AP)和烷基酚聚氧基醚(ape)、双酚类和新烟碱类农药。对54份地表水和17份河床沉积物样本进行了污染物分析。多环芳烃是最普遍的污染物类别。17份样品(289例)中17种多环芳烃的检出阳性率为71%。地表水样品没有分析多环芳烃。接下来,在分析的4个ap和ape中,35%的沉积物样品和54个水样中21%的样品检测呈阳性。在2%的沉积物样品和4%的水样中检测到双酚类似物。由于现场空白污染,未对双酚A (BPA)进行定量,但对环境样品中的双酚AF (BPAF)、双酚E (BPE)、双酚F (BPF)和双酚S (BPS)进行了检测。在0.5%的沉积物样品和0.4%的水样中检测到新烟碱类。污染物的低检测频率妨碍了对流域土地利用特征的分析,但四个地点(蒂舍河、米勒河、鲤鱼河和铁河)出现了相对较高的污染物浓度。与ToxCast和其他水质准则的浓度比较表明,某些样品可能产生生物效应。这项研究提供了苏必利尔湖支流低污染物流行率的基线,同时确定了几个可能需要进一步监测的地点。
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来源期刊
Journal of Great Lakes Research
Journal of Great Lakes Research 生物-海洋与淡水生物学
CiteScore
5.10
自引率
13.60%
发文量
178
审稿时长
6 months
期刊介绍: Published six times per year, the Journal of Great Lakes Research is multidisciplinary in its coverage, publishing manuscripts on a wide range of theoretical and applied topics in the natural science fields of biology, chemistry, physics, geology, as well as social sciences of the large lakes of the world and their watersheds. Large lakes generally are considered as those lakes which have a mean surface area of >500 km2 (see Herdendorf, C.E. 1982. Large lakes of the world. J. Great Lakes Res. 8:379-412, for examples), although smaller lakes may be considered, especially if they are very deep. We also welcome contributions on saline lakes and research on estuarine waters where the results have application to large lakes.
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