川西磷石膏成分以及氡和放射性分析研究  

Analysis & Study of Composition,Radon & Radioactivity of Phosphogypsum from the West Sichuan

作　　者：杨瑞[1] 邓跃全[1] 张强[1] 董发勤[1,2] 徐光亮[1] 

机构地区：[1]西南科技大学材料学院,绵阳621010 [2]西南科技大学固体废物处理与资源化省部共建教育部重点实验室

出　　处：《非金属矿》2008年第2期17-20,共4页Non-Metallic Mines

基　　金：教育部重点项目基金赞助项目(204118);西南科技大学2004年度重大科研项目基金赞助

摘　　要：川西两种磷石膏总磷含量分别为1.39%、6.93%,有效磷含量分别为0.23%、2.25%;有用营养成分SiO2、MgO、Fe含量较高,Cu、Zn、Mn次之,有害元素Pb、As、Hg很低,水溶态MgO、Zn、SiO2、Mn有一定的含量,而有害元素Cd、Pb、As、Hg的水溶态未检出,应用于农业是安全的;两种磷石膏的氡浓度分别为84.25Bq/m3、76.76Bq/m3,内照射指数分别为0.853、0.513,外照射指数分别为0.583、0.771,氡和放射性指标均未超过但接近国家有关限量标准,应用于建材时,要考虑防氡防辐射的问题。Compositions of two kinds of phosphogypsum from the west Sichuan are determined in this paper, The results show that the contents of total phosphorus are 39% and 6.93% respectively, the content of efficient phosphorus are 0.23% and 2.25% respectively, the content of the useful nutrient components （SiO2, MgO and Fe） are higher, Cu, Zn and Mn arc secondary, the content of harmful elements （Pb, As and Hg） arc low, some water soluble object of MgO, Zn, SiO2, and Mn were detected, and the water-soluble object of harmthl elements （Cd, Pb, As, Hg） was not detected, indicating that phosphogypsum is security applied on agriculture; radon concentration in two kinds of phosphogypsum are 84.25 Bq/m^3 and 76.76 Bq/m^3 respectively, internal exposttre index are 0.853 and 0.513 respectively, and external exposure index are 0.583 and 0.771 respectively, the level of radon and radioactiveity don＇t exceed but approach national standard, and several times higher than the common building materials-river sand, therefore, it must be considered that the problem of preventing radon and radioactiveity applied to building materials.

关 键 词：磷石膏 成分 氡 放射性 分析 

分 类 号：TQ177.375[化学工程—硅酸盐工业] X837[环境科学与工程—环境工程]