AN IMPROVED PROCEDURE FOR SAMPLING MUTAGENS BY HANGING BLUE RAYON IN AQUATIC ENVIRONMENT

为监测水中多环致突变物，提出了一种在水体中悬挂蓝人造丝（一种对多环化合物有选择性的吸附剂）的采样技术。通过这种技术测量的量可能会受到悬挂期间水运动的影响，尽管该过程简单且信息丰富。在这里，我们已经改进了这项技术更定量，通过修正的量的水流强度。(1)我们使用苯并（a）芘（BaP）作为多环诱变剂的模型。在实验水族箱中的研究表明，悬挂的蓝色人造丝是水中BaP的有效监测器，但是当水剧烈搅拌时，吸附量会增加。(2)我们采用了一个石膏球的方法，小松提出了一个简单的测量强度的水运动。一个减少8在一段时间内的24小时悬挂（Wd）相关以及由电磁流量计测量的水的平均流量。因此，简单地使用测量的Wd来校正Ba的量 ...更多信息 P相当于在水中悬挂蓝色人造丝时的强度校正。(3)建立了一种便携式水中苯并（a）芘采样器，通过浸渍Sep-Pak C18作为吸附剂，水连续通过电池驱动的水泵。利用采样器可以测量环境沃茨中的苯并（a）芘（BaP）ng/L的浓度，即时间加权平均值（TWA-BaP），但仪器价格昂贵。(4)同时测定了蓝粘胶（BR-BaP）对BaP的吸附量和石膏球挂片时的吸湿量。BR-BaP除以Wd计算的校正值与TWA-BaP具有良好的相关性（相关系数为0.865，相关系数为0.818）。相关方程为{（TWA-BaP）=6.5x（BR-BaP）/（Wd）}。结果表明，修正后的测量精度得到了定量的提高。(5)我们选择了两个采样点：一个是大型工业企业包围的港口，另一个是远离污染源。校正值的水载BaP在前者的网站范围为0.14至0.63纳克/克BR/克石膏和那些在后者的网站是小于0.16。结果表明，前者比后者受BaP污染更严重。少

For monitoring polycyclic mutagens in water, we proposed a sampling technique : hanging blue rayon (an adsorbent selective for polycyclic compund) in water sites. The amount measured by this technique may be affected by water movement during hanging, although the procedure is simple and informative. Here, we have improved this technique more quantitatively, through correcting the amount by the intensity of water stream.(1) We used benzo (a) pyrene (BaP) as a model for polycyclic mutagen. Studies in an experimental aquarium showed a hanging blue rayon is an efficient monitor for BaP in water, however the amount adsorbed increases when the water is stirred vigorously.(2) We applied a gypsum-ball method proposed by Komatsu as a simple measurement for intensity of water movement. A reduced eight during a period of 24-hr hanging (Wd) correlated well with the average flow of water measured by an electromagnetic flow meter. Therefore a simple use of measured Wd for correcting the amount of Ba … More P is equivalent to the correction by the intensity when the procedure is accompanied by hanging blue rayon in water.(3) We set up a portable sampler for BaP in water, through immersed Sep-Pak C18 as an adsorbent, the water was continuously passed by a battery-operated pump. We could measure ng/L-level of BaP in environmental waters as the time-weighted average (TWA-BaP) by the sampler, however the apparatus is expensive.(4) We measured the amount of BaP adsorbed by blue rayon (BR-BaP) and Wd of gypsum-ball during similutaneous hanging. A corrected value calculated by deviding BR-BaP with Wd showed good correlation with TWA-BaP (correlation coefficients were 0.865 with correction and 0.818 without). The correlation equation given here was {(TWA-BaP)=6.5x(BR-BaP)/(Wd)}. The results suggest that the correction improves accuracy of measurement quantitatively.(5) We selected 2 sampling sites : one was a port surrounded by big industries and the other was far from the origin of pollution. Corrected values of water-borne BaP at the former site ranged from 0.14 to 0.63 ng/gBR/gGypsum and those at the latter site was less than 0.16. The results explain the former site was more polluted by BaP than the latter in contrast. Less