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一、前 言 粤东海岸带666,DDT污染调查是对于保护海岸带环境、保护海洋水产资源,保护海洋环境、保障沿海人民的身体健康都具有重要的现实意义和深远意义。 调查范围,西起深圳市的大鹏湾(即东经117°17.5’),东至福建省诏安湾(东经117°17.5’)。海域设36个采样站,其中水、底泥36个站,生物31个站,底质柱状样5个站。潮间带设17个水、底泥,生物采样站。时间分别在春季(1983年3月31日-4月12日),秋季(1983年9月14日-9月28日)进行两企航次出海采样。1984年春季和秋季又进行一次潮间带海水、底泥采样。采回海水、底泥、生物样共550个。分析仪器是英国山度厂FB5-D型气相色谱仪,检测器是氚钪电子捕获,色谱柱是1.5％OV-17+2％QF1/chromosorb AW DMCS80-100目。最小检测量5×10-12克-3×10-13克,回收率98％-99%,相对误差±0.5％-±5％,检出率100%。
I. Preface The investigation of DDT pollution in the eastern Guangdong coast is of great practical and far-reaching significance for the protection of the coastal environment, the protection of marine and fishery resources, the protection of the marine environment, and the protection of the health of the coastal people. The survey area starts from Dapeng Bay in Shenzhen (ie 117 ° 17.5’E) in east and Zhaoan Bay in Fujian Province to the east (117 ° 17.5’E). There are 36 sampling stations in the sea, of which 36 are water and sediments, 31 are biological and 5 are sediment-like columns. Intertidal set 17 water, sediment, biological sampling station. The time was taken for the two enterprises to take sea voyage sampling in the spring (March 31-April 12, 1983) and autumn (September 14-September 28, 1983) respectively. In the spring and autumn of 1984, an intertidal seawater and sediment sampling was conducted. Seawater backwater, sediment, a total of 550 biological samples. Analytical instrument is the British Abbott FB5-D type gas chromatograph, the detector is tritium scandium electron capture, the column is 1.5% OV-17 +2% QF1 / chromosorb AW DMCS80-100 mesh. The minimum detection capacity of 5 × 10-12 grams -3 × 10-13 grams, the recovery rate of 98% -99%, the relative error of ± 0.5% - ± 5%, the detection rate of 100%.