玻璃纤维滤筒不同消解方式测铅结果对比

Comparison of different digestion methods for glass fiber filter tube

微波消解未预处理玻璃纤维滤筒测试含铅量为0.458mg/L,预处理后玻璃纤维滤筒测试铅含量为0.153mg/L,微波消解酸洗玻璃纤维滤筒加标测定值为0.348mg/L,加标回收率为97.5%;电热板酸煮未酸洗玻璃纤维滤筒测试含铅量为0.353mg/L,酸洗后玻璃纤维滤筒测试铅含量为0.056mg/L,酸洗玻璃纤维滤筒加标测定值为0.250mg/L,加标回收率为97%。

Using the microwave digestion method ,the measured lead contents for the un‐pretreated and pretreated glass fiber filter tube are 0 .458mg/L and 0 .153mg/L ,respectively .Using the electric heat‐ing plate method ,the measured lead contents for the un‐pretreated and pretreated glass fiber filter tube are 0 .353mg/L and 0 .056 mg/L ,respectively .The determination results of microwave digestion method are higher than that of electric heating plate method .