摘要
为验证新的砷前处理方法,在本次实验中分别于2010年3月28日、3月31日和4月4日共进行3次重现性验证,同一样品砷含量的平行值分别为8.14×10-6和8.60×10-6、8.04×10-6和8.68×10-6以及8.20×10-6和8.21×10-6,重复性和重现性均非常好;三次实验中样品加标回收率分别为104%、99.1%和104%,标准样品砷含量的平行值分别为11.2×10-6和10.9×10-6、10.8×10-6和11.0×10-6以及11.5×10-6和11.0×10-6,表明该前处理方法能完全溶解出土壤中的砷元素,重复性和重现性均优良;三次实验中的标准曲线线性重现性非常得好,斜率和截距变换不大,均在合理变化范围之内。
Three experiments were carried out to examine the repeatability of a new pretreatment of arsenic in soil at Mar. 28, Mar. 31, and Apr. 4, respectively. The results showed a good repeatability and reproducibility with measured value on the same sample of 8.14 ×10^-6 and 8.60 ×10^-6 ,8.04 ×10^-6 and 8.68 ×10^-6, 8.20 ×10^-6 and 8.21 ×10^-6, respectively. The rates of recovery of the three experiments which were 104%, 99.1% and 104%, respectively and the measured value of standard which were 11.2 ×10^-6 and 10.9 ×10^-6, 10.8 ×10^-6 and 11.0 ×10^-6, 11.5 ×10^-6 and 11.0 ×10^-6 showed a good repeatability and reproducibility of this method. And the curve in the three experiments showed a good reproducibility with a little slope and intercept.
出处
《广州化工》
CAS
2011年第14期122-123,132,共3页
GuangZhou Chemical Industry
关键词
前处理
砷
土壤
pretreatment
arsenic
soil
