| 杨胜园,于军晖,杨慧仙,徐小娜,陈志英.硫化汞光散射法检测环境水样中痕量汞[J].南华大学学报(自然科学版),2015,29(3):78~81.[YANG Sheng-yuan,YU Jun-hui,YANG Hui-xian,XU Xiao-na,CHEN Zhi-ying.Determination of Trace Mercury in Environmental Water with Mercuric Sulfide by Light Scattering Method[J].Journal of University of South China(Science and Technology),2015,29(3):78~81.] |
| 硫化汞光散射法检测环境水样中痕量汞 |
| Determination of Trace Mercury in Environmental Water with Mercuric Sulfide by Light Scattering Method |
| 投稿时间：2014-11-30 |
| DOI： |
| 中文关键词: 硫化汞 汞 光散射 |
| 英文关键词:Mercuric Sulphide Mercury Light Scattering |
| 基金项目:国家自然科学基金资助项目(11205085)；湖南省自然科学基金资助项目(14JJ3101) |
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| 中文摘要: |
| 建立了一种利用光散射测定水中痕量汞的新方法,在碱性介质中,硫化钠(Na2S)与汞离子生成硫化汞(HgS)颗粒,在阴离子表面活性剂十二烷基硫酸钠(SDS)的作用下,光散射强度增大.在468 nm波长处,光散射强度最大,并且散射光增强强度(△I)与汞的浓度(2.48×10-10~6.00×10-9 mol/L)呈良好的线性关系,线性回归方程为△I=34.05c+14.2,相关系数r为0.9988.据此建立检测环境水样中痕量汞的新方法,该方法检出限为7.44×10-11 mol/L；样品加标回收率为98.80%～103.00%. |
| 英文摘要: |
| A new Light Sattering (RLS) method for the determination of trace Mercury in water was established.In alkaline medium,sodium sulphide (Na2S) reacted with mercury ions generated mercuric sulfide (HgS) particles,resulting in the enhancement of light scattering intensity.At 468 nm wavelength,the intensity of light scattering was proportional to the concentration of mercury ion in the range of 2.48×10-10~6.00×10-9 mol/L.The linear regression equation was △I=34.05c+14.2 with a correlation coefficient of 0.9988,and the detection limit was 7.44×10-11 mol/L.The recovery rates were 98.80%~103.00%. |
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