摘要
为了了解海南南渡江的无机物和有机磷农药指标情况,对南渡江18个站点水样中氯化物、硝酸盐、硫酸盐、有机磷农药进行检测.试验结果显示流水坡和南渡江大桥两处水样的氯化物含量超过国家标准,分别为9564.810 mg/L和462.56 mg/L,鹿寨处水样的氯化物浓度最高为35.00 mg/L,西江处水样的氯化物浓度最低为17.44 mg/L.南渡江水样的硝酸盐含量均符合国家标准,永发处水样硝酸盐的浓度最高,为5.2 mg/L;福才处水样硝酸盐的浓度最低,为0.1 mg/L.仅有流水坡处水样的硫酸盐含量超过国家标准,为494.50 mg/L,南渡江大桥处水样的硫酸盐含量最高,为110.50 mg/L;那大处水样的硫酸盐含量最低,为0.19 mg/L.流水坡和南渡江大桥处于近海口,硫酸盐和氯化物超标主要原因是海水入侵导致.南渡江水域没有检测出有机磷农药.整体来看,南渡江流域氯化物、硝酸盐、硫酸盐和有机磷农药含量符合地表水环境质量标准.
In order to understand the content of inorganic substance of water from Nandu River in Hainan Province,the inorganic substance including chloride, nitrate and sulfate and organic phosphorus pesticide gathered from 18 sites of Nandu river are detected. The experimental results show the chloride content of samples taken from Liushuipo and Nandujiang Bridge exceed the national standard, which are 9564.8 mg/L and 462.56 mg/L respectively. The highest one is 35 mg/L in Luzhai and the lowest one is 17.44 mg/L in Xijiang. The nitrate content of all samples meet the national standard. The highest one is 5.2 mg/L in Yongfa and the lowest one is 0.1 mg/L in Fucai. Only the sulfate content of sample in Liushuipo exceeds the national standard, which is 494.5 mg/L. The highest one is 110.5 mg/L in Nandujiang Bridge and the lowest one is0.19 mg/L in Nada. Liushuipo and Nandujiang Bridge locate at the mouth of the sea. The reason of sulphate and chloride beyond index is seawater intrusion. Organic phosphorus pesticide is not detectable in Nandu River. On the whole, the content of chloride, nitrate, sulfate and organic phosphorus pesticide in the Nandu river water meet the national standard of drinking water.
出处
《海南师范大学学报（自然科学版）》
CAS
2017年第2期161-165,共5页
Journal of Hainan Normal University（Natural Science）
基金
海南省重大科技计划项目(ZDKJ2016022-02)
海南省自然基金项目(20162032)
大学生创新项目(cxcyxj2016007)
