Lam Ka-Ho, Cai Zongwei, Wai Ho-Yin, Tsang Vic Wing-Hang, Lam Michael Hon-Wah, Cheung Richard Yun-Hing, Yu Hongxia, Lam Paul Kwan-Sing
Centre for Coastal Pollution and Conservation, Department of Biology & Chemistry, City University of Hong Kong, Tat Chee Ave., Kowloon, Hong Kong SAR, China.
Environ Pollut. 2005 Jul;136(2):221-30. doi: 10.1016/j.envpol.2005.01.014.
A previously unknown s-triazine species present in commercially available Irgarol-1051, a booster biocide additive in copper-based antifouling paints for the replacement of organotin-based antifoulants, has been identified in the coastal aquatic environment. After careful isolation, purification and characterization by high resolution MS-MS and (1)H NMR, the molecular structure of that unknown species is found to be N,N'-di-tert-butyl-6-methylthiol-s-triazine-2,4-diamine (designated as M3). Levels of Irgarol-1051, its major degradation product (M1) and the newly identified M3 in the coastal waters of Hong Kong, one of the world's busiest ports located in the southern coast of China, were monitored by SPME-GC-MS and SPME-GC-FID. Water samples from five locations within Hong Kong waters were analysed and the levels of Irgarol-1051, M1 and M3 were found to be 0.1-1.6 microg l(-1), 36.8-259.0 microg l(-1) and 0.03-0.39 microg l(-1), respectively. Our results indicate that M3 is relatively stable against photo- and bio-degradation and may pose considerable risk to primary producer communities in the coastal marine environment.
在沿海水生环境中发现了一种先前未知的均三嗪物种，该物种存在于市售的 Irgarol-1051 中，Irgarol-1051 是一种用于替代有机锡类防污剂的铜基防污涂料中的增效杀生剂添加剂。经过高分辨率质谱 - 质谱联用仪和（1）H 核磁共振仔细分离、纯化和表征后，发现该未知物种的分子结构为 N，N'-二叔丁基 - 6 - 甲硫基 - 均三嗪 - 2，4 - 二胺（命名为 M3）。采用固相微萃取 - 气相色谱 - 质谱联用仪和固相微萃取 - 气相色谱 - 火焰离子化检测器对位于中国南部海岸的世界最繁忙港口之一的香港沿海水域中的 Irgarol-1051、其主要降解产物（M1）和新鉴定出的 M3 的含量进行了监测。对香港水域内五个地点的水样进行了分析，发现 Irgarol-1051、M1 和 M3 的含量分别为 0.1 - 1.6 μg l(-1)、36.8 - 259.0 μg l(-1) 和 0.03 - 0.39 μg l(-1)。我们的结果表明，M3 对光降解和生物降解相对稳定，可能会对沿海海洋环境中的初级生产者群落构成相当大的风险。
