南华大学学报（自然科学版）
南華大學學報（自然科學版）
남화대학학보（자연과학판）
Journal of University of Souht China (Science & Technology)
2015年
3期
78-81
,共4页
杨胜园%于军晖%杨慧仙%徐小娜%陈志英
楊勝園%于軍暉%楊慧仙%徐小娜%陳誌英
양성완%우군휘%양혜선%서소나%진지영
硫化汞%汞%光散射
硫化汞%汞%光散射
류화홍%홍%광산사
Mercuric Sulphide%Mercury%Light Scattering
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( Na2 S)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=34.05 c+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％.
建立瞭一種利用光散射測定水中痕量汞的新方法,在堿性介質中,硫化鈉( Na2 S)與汞離子生成硫化汞( HgS )顆粒,在陰離子錶麵活性劑十二烷基硫痠鈉( SDS)的作用下,光散射彊度增大.在468 nm波長處,光散射彊度最大,併且散射光增彊彊度(△I)與汞的濃度(2.48×10-10~6.00×10-9 mol/L)呈良好的線性關繫,線性迴歸方程為△I=34.05 c+14.2,相關繫數r為0.9988.據此建立檢測環境水樣中痕量汞的新方法,該方法檢齣限為7.44×10-11 mol/L；樣品加標迴收率為98.80％~103.00％.
건립료일충이용광산사측정수중흔량홍적신방법,재감성개질중,류화납( Na2 S)여홍리자생성류화홍( HgS )과립,재음리자표면활성제십이완기류산납( SDS)적작용하,광산사강도증대.재468 nm파장처,광산사강도최대,병차산사광증강강도(△I)여홍적농도(2.48×10-10~6.00×10-9 mol/L)정량호적선성관계,선성회귀방정위△I=34.05 c+14.2,상관계수r위0.9988.거차건립검측배경수양중흔량홍적신방법,해방법검출한위7.44×10-11 mol/L；양품가표회수솔위98.80％~103.00％.
A new Light Sattering ( RLS) method for the determination of trace Mercury in water was established. In alkaline medium,sodium sulphide ( Na2 S) reacted with mercury ions generated mercuric sulfide ( HgS) particles,resulting in the enhancement of light scat-tering 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 . 05 c + 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%.
