南昌市雨水和湖水硫同位素特征的研究  

STUDY ON SULFUR ISOTOPES IN RAIN WATER AND LAKE WATER IN NANCHANG CITY

作　　者：乐淑葵[1] 潘家永[1] 陈益平[1] 严兆彬[1] 韩善楚[1] 

机构地区：[1]东华理工大学核资源与环境教育部重点实验室,江西南昌330013

出　　处：《地球与环境》2007年第4期297-302,共6页Earth and Environment

基　　金：教育部科学技术研究重点项目(批准号:205085)

摘　　要：为探讨南昌市酸雨的硫源，研究了2006年南昌市区雨水、湖水的pH值、硫酸根离子浓度和硫同位素组成，并对市区用煤的δ^14S值进行了测定。结果表明，雨水硫同位素组成的变化范围在～3．5‰～5．5‰之间，且具有夏季轻，冬、春季重的特点。湖泊水、赣江水的δ^14S值变化范围在4．3‰～10．3‰之间。2006年南昌市酸雨污染较严重，冬春季时雨永的酸度较大。雨水中硫的来源是由生物成因硫、人为成因硫和海源硫综合贡献的，夏季生物硫贡献比重大，冬春季人为硫是主要贡献者，海源硫贡献可能很小。This paper analyzed the pH and sulfur ion concentrations of rain water and lake water from Nanchang City in 2006, and the sulfur isotopic composition was examined. The δ^14 S values of coal used in Nanchang City were also measured. The results indicated that the sulfur isotopic composition of rain water varies between -3.5‰ and 5.5‰ , and the sulfur isotopic composition possesses a seasonal variation trend, isotopically lighter in summer and heavier in winter and spring. The sulfur isotopic composition of lake water and Ganjiang River water varies between 4.3‰ and 10.3‰. In 2006, Nanchang City was polluted seriously by acid rain, and the acidity of rain water is high in winter and spring. The sources of sulfur in rain water include bio -organic sulfur , anthropogenic sulfur and sulfur from the sea. In summer, the sulfur in rain water comes mainly from bio-organic sulfur. In winter and spring ,the sulfur in rain water dominantly originates from anthropogenic sulfur. The sulfur in rain water from the sea may be very small in percentage.

关 键 词：南昌市 雨水 湖水 硫同位素 

分 类 号：P597[天文地球—地球化学]