用示波极谱法测定了焊锡车间空气及其周围大气中的锡。在 p H 2 .5的0 .1mol/ L 氯乙酸介质中 ,Sn( )与焦没食子酸形成的络合物在汞电极上还原可分别在 -0 .2 5 V和 -0 .45 V各产生一峰形良好的还原波。当有四价钒存在时 ,-0 .45 V处的波的峰电流大幅度增大 ,产生一灵敏的催化电流。该催化电流与锡浓度在 1× 10 -8～ 5× 10 -7mol/ L 范围内呈线性关系 ,检测限为 5× 10 -9mol/ L The oscillopolarographic method was used to determine the tin in the air of the soldering workshop and its surroundings. In the 0.1 mol / L chloroacetic acid medium of p H 2 .5, the complex of Sn () and pyrogallol can be reduced at -0.255 V and -0.45 V Produce a good shape of the reduction wave. When tetravalent vanadium is present, the peak current at -0.45 V greatly increases, producing a sensitive catalytic current. The catalytic current and the tin concentration in the range of 1 × 10 -8 ~ 5 × 10 -7 mol / L showed a linear relationship with a detection limit of 5 × 10 -9 mol / L