论文部分内容阅读
水样的采集和保存是水质分析的重要部分.有资料介绍测定氟化物样品最适的保存方式为聚乙烯瓶4℃保存7天左右,由于氟化物能与玻璃瓶发生反应而使测定结果偏低,建议不用玻璃瓶保存,为此作了比较,发现两种容器保存对测定结果无影响.1 材料与方法用清洗干净的聚乙烯塑料桶和玻璃瓶各20个,分别采集饮用井水10份,每份水样分四种保存方式,分别为塑料桶室温保存,塑料桶2～8℃冰箱保存,玻璃瓶室温保存,玻璃瓶2～8℃冰箱保存.分别于第0天、10天、20天、30天、90天测定各水样氟化物值.每次测定后立即放回原处.
The collection and preservation of water sample is an important part of water quality analysis.According to the data, the most suitable storage method for determination of fluoride sample is that polyethylene bottle is stored at 4 ℃ for 7 days or so, because fluoride can react with glass bottle, Low, it is recommended not to save glass bottles, for which comparison was made and found that the two containers have no effect on the determination of the results.1 Materials and methods with clean polyethylene plastic pail and glass bottles of 20, were collected drinking water 10 The water samples were stored in four ways at room temperature, respectively, stored in plastic buckets at 2 ~ 8 ℃, preserved in glass bottles at room temperature, and stored in glass bottles at 2 ~ 8 ℃ for 10 days , 20, 30, 90 days to determine the value of each fluoride value of the water sample.