珠江口海水中的硼和锶的行为研究

Study on the Behavior of Boron and Strontium in Zhujiang Estuary

采用作者研究的ＯＰ－ 乳化剂增敏姜黄素分光光度法测定海水中的溶解硼，用ＩＣＰ－ ＡＥＳ法测海水中的硼和锶。发现在珠江口海水盐度２．６８６ ～２５ ．７２２ ，氯度１ ．４４０ ～１４ ．１３６ 为０．２１５ ～０ ．２２９ｍｇ·ｋｇ－ １ ，平均值为０ ．２２４±０ ．００５ｍｇ·ｋｇ－ １ ｍｇ·ｋｇ－ １７ ．６４ ，Ｓｒ（ｍｇ·ｋｇ－ １）／Ｃｌ 比值为０．３８０ ～０ ．６６３，平均值为０ ．４０４ ±０ ．０１６ ，两者皆在大洋海水自然变动范围之内。珠江口海水中的硼和锶浓度与海水盐度或氯度均有很好的线性关系。珠江口外南海海水盐度３２ ．９２３ ～３３．４４６， 氯度１８ ．２４１ ～１８．５５８ ，Ｂ浓度为４ ．０２ ～４ ．２４ｍｇ·ｋｇ－ １ ，Ｓｒ 浓度为７．６４ ～７ ．７０ｍｇ·ｋｇ－ １ 。珠江口海水实验数据统计回归线与理论释线比较后表明，珠江口海水中硼与锶均具有良好的保守性质，珠江口海水中的硼和锶主要来自湾外海海水潮汐输入。

Dissolved boron in seawater of the Zhujiang Estuary has been determined with sensitized reaction of emulsion the OP micelle Curcumin method newly developed by us. Dissolved Sr in seawater has been determined with the ICP AES method. Boron in the Zhujiang Estuary varies from 0.32～3.15mg·kg -1 in chlorinity (Cl) ranging 1.440～14.136, and Sr content shows a high linear correlation with Cl or S (Salinity). Based on the concept of theoretical diution Line (TDL), B and Sr in the Zhujiang Estuary show a conservative charater. The ratios of B (mg·kg -1 ) to Cl are between 0.215 and 0.229 with mean value of 0.224±0.005, The Sr(mg·kg -1 )/Cl ratios are between 0.380 and 0.663 with a mean value of 0.404 ±0.016. B and Sr in the Zhujiang Estuary derive almost entirely from external seawater.