生鲜乳中硫氰酸钠的检测

Determination of Sodium Thiocyanate in Raw Milk

生鲜乳中掺入硫氰酸钠后可有效抑菌、保鲜。但硫氰酸钠具有毒性,少量的食入就会对人体造成极大伤害。本试验采用离子色谱法于2014年对河北省唐山市4个县的乳头奶和罐奶共计643批生鲜乳样品进行了硫氰酸钠的监测,以评估唐山地区生鲜乳的质量安全。结果表明,643批生鲜乳样品中硫氰酸钠含量总体情况符合正态分布,最小、最大、平均含量分别为0.13、15.7和2.52mg/kg。对乳头奶中的硫氰酸钠和罐奶中的硫氰酸钠进行比较,发现乳头奶中的硫氰酸钠和罐奶中的硫氰酸钠的分布情况基本一致,表明本研究中唐山地区生鲜牛乳不存在人为添加硫氰酸钠的问题。

Sodium thiocyanate is always used for inhibiting bacterial growth and keeping raw milk fresh. However, it is toxic, little quatity of which will cause huge harm to human, and threatens healthy of the people. It will interfere with the harmonious development of society. To assess the risk of raw milk in Tangshan city, in this study, contents of sodium thiocyanate in napple milk and milk from tank, totally 643 samples from 4 counties in Tangshan of Hebei Province were detemined using ion chromatographic in 2014. The results showed that the sodium thiocyanate contents in 643 raw milk samples were subordinate to the normal distribution law. The minimum, maximum, and mean value were 0.13, 15.7, and 2.52mg/kg. The contents comparison of napple milk and milk from tank was performed, and it showed that the distribution of sodium thiocyanate contents in napple milk was almost agreed with that in milk from tank, which suggested that artificially adding sodium thiocyanate was not found in raw milk in Tangshan city.