硒对人体健康有着重要影响，硒在人体中含量过高或过低都会引起疾病。由于人发中硒浓度含量较高且稳定，能够反映体内硒的营养水平，且取样方便；工作中我们参考食物中硒的测定方法，引进数字恒温消解仪，采用ＨＮＯ３－ＨＣＬＯ４混酸恒温消化，对样品的前处理和测定方法进行 Selenium has an important impact on human health, selenium content in the human body is too high or too low will cause disease. Due to the high and stable content of selenium in human hair, it can reflect the nutrition level of selenium in the body and the sampling is convenient. In the work, we refer to the determination method of selenium in food, introduce the digital thermostat digestion instrument, and digest with HNO3-HCLO4 mixed acid, Sample pretreatment and determination methods