尿中三甲基氯化锡的顶空-气相色谱测定法

目的 建立测定尿中三甲基氯化锡的顶空-气相色谱法.方法 尿样中三甲基氯化锡经衍生后用顶空-气相色谱进行分离,定性定量检测.结果 在0.02～0.40 mg/L浓度范围内尿中三甲基氯化锡呈二次曲线,r=0.999 2,检出限为0.005 mg/L,相对标准偏差为1.9%～2.5%,回收率为92.0%～100.0%,尿样在-18 ℃冰箱中至少可以保存90d.结论 本法对于检测中所用的仪器、试剂要求较低,样品处理简便,方法 灵敏度高,干扰少,重现性好,适用于定性和定量分析,便于推广.

Abstract：

Objective To establish a detection method for trimethyltin chloride in urine by the Head space-GC. Method After derivatizing trimethyltin chloride, the urines was separated by the head space-gc,and then the trimethyltin chloride detected qualitatively and quantificationally. Results In the concentration range of 0.02～0.40 mg/L urinary trimethyltin chloride, showed a quadratic, r = 0.999 2,detection limit was 0.005 mg/L, the relative standard deviation was 1.9%～2.5%, recovery was 92.0% to 100%,the urine samples can be saved at least 90 days in -18 ℃ refrigerator. Conclusion The instrument,reagents involved in the detection require low, the operations to processing samples are simple, high sensitivity, less interference, good reproducibility, and suitable for quantitative and qualitative analysis,convenient to promotion.

Determination of trimethyltin chloride in urine by headspace-gas chromatograply

Objective To establish a detection method for trimethyltin chloride in urine by the Head space-GC. Method After derivatizing trimethyltin chloride, the urines was separated by the head space-gc,and then the trimethyltin chloride detected qualitatively and quantificationally. Results In the concentration range of 0.02～0.40 mg/L urinary trimethyltin chloride, showed a quadratic, r = 0.999 2,detection limit was 0.005 mg/L, the relative standard deviation was 1.9%～2.5%, recovery was 92.0% to 100%,the urine samples can be saved at least 90 days in -18 ℃ refrigerator. Conclusion The instrument,reagents involved in the detection require low, the operations to processing samples are simple, high sensitivity, less interference, good reproducibility, and suitable for quantitative and qualitative analysis,convenient to promotion.