论文部分内容阅读
目的掌握大同盆地地方性砷中毒(地砷病)病区饮用水的水砷价态分布情况及其与病情的关系。方法对地砷病患者和对照者的生活饮用水进行采样,用氢化物发生-原子荧光法(HG-AFS)进行检验,SPSS10.0forWindows软件进行统计处理数据。结果大同盆地砷超标水样(>0.05mg/L)中,3价砷(As3+)占总砷(As)的比值为52.1%;As3+/总As比值,组间比较,差异有统计学意义(χ2=22.4,P<0.01),并且As3+与5价砷(As5+)比值的比较,差异有统计学意义(χ2=26.19,P<0.01);随着病情的加重,As3+与As5+的比值也在增加。结论大同盆地地砷病病区中水砷价态分布以As3+为主,地砷病病情与水体中As3+的所含比例呈正相关关系,今后在分析水含砷量时,应该摸清水砷价态的分布情况。
Objective To understand the distribution of arsenic valence state of drinking water in endemic arsenism (Arsenicosis) endemic area in Datong Basin and its relationship with the disease. Methods Samples of drinking water from patients with arsenicosis and controls were collected and tested by hydride generation-atomic fluorescence spectrometry (HG-AFS). SPSS 10.0 software was used to analyze the data. Results The ratio of As 3 + to As 3+ in As (superscript +) water samples (> 0.05 mg / L) in Datong Basin was 52.1%. The As 3 + / total As ratio was significantly different between groups (χ2 = 22.4, P <0.01). The ratio of As3 + to As5 + was also significantly different (χ2 = 26.19, P <0.01). As the disease progressed, the ratio of As3 + to As5 + increase. Conclusion The distribution of arsenic valences in the arsenic-affected area of Datong Basin is mainly As3 +. The arsenic excretion has a positive correlation with the content of As3 + in water. In the future, the arsenic valence State distribution.