氢化物无色散原子荧光法测定化探样品中的锡  

Determination of tin in geophysical prospecting samples by atomic fluorescence spectrometry

作　　者：闫凤林[1] 王世东[1] 

机构地区：[1]吉林省第五地质调查所,吉林九台130500

出　　处：《吉林地质》2009年第1期92-94,共3页Jilin Geology

摘　　要：将样品放入坩埚中用王水溶解,再放入高氯酸,然后在中温电热板加热坩埚至冒高氯酸的白烟,此时硝酸已蒸发掉,趁热加入盐酸将锡还原成低价。用硫脲—抗坏血酸消除铁等过渡金属元素的干扰,用氢化物原子荧光法测定化探样品中的锡。经国家一级标准样品验证,这种方法简便可靠,具有较高的灵敏度和较低的检出限。By the action of nitric acid, hydrochloric acid and perchloric acid, heating perchlorc acid until it smokes gas from the heated plank with middle temperature in order to remove nitric acid. , then mixed hydrochloric acid to reduce to subvalence tin, thiourea-ascorbic acid were used to remove interference of the transition metals such as copper, iron and zinc etc, determining tin in geophysical prospecting samples by atomic fluorescence spectrometry. The method was verified by the national first class standard. The method shows simple, credibility, higher sensitivity and lower detection limit.

关 键 词：氢化物 原子荧光法 锡 

分 类 号：P657.31[天文地球—地质学]