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本文就家禽卵中痕量重金属的火焰原子吸收法测定作了一些探讨,找出硝酸与硫酸按3∶1混合在150℃左右可将高蛋白,高脂肪样品进行消解的条件,分析程序安全、快速、准确,适宜日常大量高蛋白,高脂肪环境样品分析。有机样品消解文献多用干法,湿法两种。干法费时过长,对工作区周围空气污染严重;温法使用混合溶剂:硝酸-硫酸-高氯酸,硝酸-高氯酸,硝酸-硫酸,硝酸-过氧化氢,或用玻璃棉将脂肪过滤等复杂手续。而高蛋白、高脂肪样品用高氯酸消解时最易引起爆炸,Haig Agemian等提出用硝酸-硫酸-过氧化氢法消解高脂肪、高蛋白样品,虽避免使用高氯酸,然而用过氧化氢澄清炭黑时,过氧化氢用量太多。本法用硝酸-硫酸消解家禽卵,直接
In this paper, the determination of trace heavy metals in poultry eggs by flame atomic absorption spectrometry were discussed. The conditions for the digestion of high protein and high fat samples with nitric acid and sulfuric acid at about 150 ℃ by 3: 1 were found. The safety, Fast, accurate, suitable for everyday large number of high protein, high fat environmental sample analysis. Digestion of organic samples and more use of dry, wet two. Dry time is too long, the work area around the air pollution is serious; warm method using a mixed solvent: nitric acid - sulfuric acid - perchloric acid, nitric acid - perchloric acid, nitric acid - sulfuric acid, nitric acid - hydrogen peroxide, Filtering and other complicated procedures. High-protein, high-fat samples digested with perchloric acid most likely to cause an explosion, Haig Agemian proposed nitric acid - sulfuric acid - hydrogen peroxide method of digestion of high-fat, high protein samples, although avoid the use of perchloric acid, Hydrogenated carbon black, hydrogen peroxide dosage too much. This Law nitric acid - sulfuric acid digestion poultry eggs, directly