Department of Physical Chemistry, Faculty of Marine and Environmental Sciences, Campus Rio San Pedro, University of Cadiz, CEI·MAR, Puerto Real, 11510 Cadiz, Spain.
Department of Environmental Technologies, Marine Research Institute (INMAR), Campus Rio San Pedro, University of Cadiz, CEI·MAR, Puerto Real, 11510 Cadiz, Spain.
Mar Pollut Bull. 2018 Oct;135:607-616. doi: 10.1016/j.marpolbul.2018.07.069. Epub 2018 Jul 27.
This is the first comprehensive study on the input, occurrence, and distribution of artificial sweeteners (ASs) in coastal wastewater treatment plants (WWTPs) and their receiving coastal waters. Acesulfame (ACE), aspartame (ASP), cyclamate (CYC), saccharine (SAC), and sucralose (SUC) were monitored for 6 months in Cadiz Bay (SW Spain). ASP was always detected at <0.1 μg L and removal efficiencies were >90% for SAC and CYC. Higher ACE removal efficiencies were observed during warmer months. Persistence of ACE and SUC was observed in both WWTPs and their receiving coastal surface waters, where values up to 0.6 and 3 μg L were measured, respectively. The highest concentrations were measured in a sewage-impacted estuary located in the north of the bay, where conservative behavior was confirmed. The source specificity and recalcitrance of ACE and SUC make them suitable for being used as sewage-pollution markers in coastal environments.
这是首次全面研究人工甜味剂（ASs）在沿海污水处理厂（WWTPs）及其受纳海域中的输入、出现和分布情况。在西班牙西南部的加的斯湾进行了为期 6 个月的监测，检测了乙酰磺胺酸钾（ACE）、阿斯巴甜（ASP）、环己基氨基磺酸钠（CYC）、糖精（SAC）和三氯蔗糖（SUC）。ASP 一直未检出（<0.1μg/L），且 SAC 和 CYC 的去除率均>90%。在温暖的月份，ACE 的去除效率更高。在两个 WWTP 及其受纳的近岸表层水中均观察到 ACE 和 SUC 的持久性，分别检测到高达 0.6 和 3μg/L 的浓度。在位于该湾北部受污水影响的河口处，测量到了最高浓度，证实了 ACE 和 SUC 的保守行为。ACE 和 SUC 的来源特异性和难降解性使它们适合作为沿海环境中污水污染的示踪剂。
