摘要
将人类的活动看成是对有毒有害元素的生产过程,应用均值-极差控制图对成都市城区内大气降尘中的汞元素(Hg)含量的分布特点进行了分析,得到异常值出现的原因,并提出纠正和预防措施。结果表明,成都市城区内汞元素的产生过程是基本稳定的,总体上处于统计控制状态。
The distribution and quality discussed with average- range (x - R ) ducing poisonous and bad element. The and steady. control about Hg element in air dust near the ground of Chengdu were control chart when regarding people's activity as the process of proresult shows that the generation process of Hg element is under control .
出处
《广东微量元素科学》
CAS
2006年第5期22-27,共6页
Trace Elements Science