Anders G
Environ Qual Saf Suppl. 1975;4:143-56.
During the months of June to August and September to December 1972 and again from January to April 1973, the river and drinking water at a number of points in seven European countries was examined for fluorescent content. The purpose of the river water studies was to identify any traces of fluorescent whitening agents (FWAs) and relate them as far as possible to knolementary role and also helped to interpret the scatter of the control level of the river water studies. Identification and separation were carried out by means of a combination of spectrofluorimetry and thin layer chromatography. Detection limits and reproducibility of the methods of determination are explained in the chapters V/3-7 (methods of analysis for FWAs. The second river water survey showed that at only one sampling point (Borås in Sweden) there was detectable concentrations (up to 8 ppb) of a lipophilic unsulfonated FWA [2, 5-BIS (BENZOXAZOL-2-YL)THIOPHENE], And these were still about 1 ppb in the third survey. JENSEN and co-worker had previously detected this substance at the same location. No traces of FWAs were detected in any of the other tests. The detection limit in river water was 0.01 ppb (1 part per American billion = 10(-3) gram per metric ton). For identification purposes, a test mixture of six FWAs each with a different chemical constitution and different fields of application was used, and this was first exposed to light in an aqueous solution for some minutes.
在1972年6月至8月、9月至12月以及1973年1月至4月期间，对欧洲七个国家多个地点的河流及饮用水中的荧光物质含量进行了检测。对河水进行研究的目的是识别荧光增白剂（FWAs）的任何踪迹，并尽可能将它们与已知来源联系起来，同时也有助于解释河水研究控制水平的离散情况。通过荧光分光光度法和薄层色谱法相结合的方式进行识别和分离。测定方法的检测限和重现性在第五章V/3 - 7（FWAs的分析方法）中有说明。第二次河水调查显示，仅在一个采样点（瑞典的博拉斯）检测到了可检测浓度（高达8 ppb）的一种亲脂性未磺化FWA [2, 5 - 双（苯并恶唑 - 2 - 基）噻吩]，并且在第三次调查中这些浓度仍约为1 ppb。延森及其同事此前曾在同一地点检测到这种物质。在任何其他检测中均未检测到FWAs的踪迹。河水中的检测限为0.01 ppb（1美制十亿分之一 = 10^(-3)克/公吨）。为了进行识别，使用了六种具有不同化学组成和不同应用领域的FWA的测试混合物，并且首先将其在水溶液中暴露于光下几分钟。
