期刊论文

中文

中国卫生检验杂志

1004-8685

2010

20

8

2073-2074+2083

本校为第一机构

目的：优化研究去离子水浸提土壤中水溶性氟的浸提条件。方法：水溶性氟含量采用去离子水浸提,在不同水土比、温度、时间及振荡速度条件下,用氟离子选择电极法测定样品中水溶性氟含量。结果：氟提取量随着水的比例升高而增大;20℃～30℃时,氟的提取量随温度升高而明显增加;振荡速度为120 r/min～240 r/min时,氟的提取量随振荡速度的增加而增加,240 r/min～300 r/min时氟提取量变化不明显,超过300 r/min时,氟提取量降低;振荡时间在10 min～60 min时,氟的提取量随着振荡时间的增加而增加,超过60 min时,氟的提取量下降。结论：水土比10：1,浸提温度30℃,振荡速度260 r/min,振荡时间60 min是去离子水...

Objective：To optimize extracting conditions of water-soluble fluorine in soil collected from rice fields and vegetable fields.Methods：The samples′ F-concentration under different extraction conditions was determined with fluoride ion selective electrode.Results：With the increasing of water proportion,temperature from 20℃～30℃,oscillation rate from 120 r/min to 240 r/min,oscillation time from 10 min～60 min,the amount of fluorine extracted with water increased,but when the proportion was over 10：1,the temperature was higher than 90℃,osci...