Caffeine, an anthropogenic marker for wastewater contamination of surface waters
Caffeine, an anthropogenic marker for wastewater contamination of surface waters
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DOI：
10.1021/es020125z
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发表时间：
2003-02-15
影响因子：
11.4
通讯作者：
Buser, HR
中科院分区：
文献类型：
--
作者：
Buerge, IJ;Poiger, T;Buser, HR
本研究评价了咖啡因作为生活污水地表水污染化学标志物的适用性。瑞士污水处理厂的进水和出水（分别为7-73和0.03-9.5马克/升）中的咖啡因浓度表明可以有效消除81-99.9%。当对排放到污水处理厂的人口进行标准化处理时，未经处理的废水中相应的负荷变化很小（15.8 +/- 3.8 mg人（-1）d(-1)），反映出相当恒定的消耗。污水处理厂的排放负荷相当低（0.06 +/- 0.03 mg人（-1）d(-1)），除了污泥年龄较低的装置（小于或等于5天，负荷高达4.4 mg人（-1）d(-1)）。尽管大多数污水处理厂都能有效地去除咖啡因，但咖啡因在瑞士的湖泊和河流中无处不在（6-250纳克/升），除了偏远的山区湖泊(
The suitability of caffeine as a chemical marker for surface water pollution by domestic wastewaters was assessed in this study. Caffeine concentrations in influents and effluents of Swiss wastewater treatment plants (WWTP's, 7-73 and 0.03-9.5 mug/L, respectively) indicated an efficient elimination of 81-99.9%. Corresponding loads in untreated wastewater showed small variations when normalized for the population discharging to the WWTPs (15.8 +/- 3.8 mg person(-1) d(-1)), reflecting a rather constant consumption. WWTP effluent loads were considerably lower (0.06 +/- 0.03 mg person(-1) d(-1)), apart from installations with low sludge age (less than or equal to5 d, loads up to 4.4 mg person(-1) d(-1)). Despite the efficient removal in most WWTPs, caffeine was ubiquitously found in Swiss lakes and rivers(6-250 ng/L, except for remote mountain lakes (