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由于农业生态环境不断被污染,砷、汞、硒等元素进入大米等农作物中,长期食用对人体造成很大的危害。长期接触砷会对人体器官产生影响,造成肝功能异常;汞对人的神经系统、肾、肝脏都会有严重破坏;微量硒是人体必须的营养元素,但其正性和毒性剂量间阈值很窄,过量的硒能引起中毒。原子荧光法测定砷、汞、硒在GB/T5009.11-2003、GB/T5009.17-2003和GB/T5009.93-2003中已被列为国标方法。微波消解具有快速、高效、损失少和试剂消耗少的优点。已被广
As the agro-ecological environment continues to be polluted, arsenic, mercury, selenium and other elements enter the crops such as rice, long-term consumption of human body caused great harm. Long-term exposure to arsenic can affect human organs and cause abnormal liver function. Mercury can cause severe damage to the nervous system, kidneys, and liver. Trace amounts of selenium are essential nutrients in the body, but the threshold between positive and toxic dose is very narrow Excessive selenium can cause poisoning. Determination of arsenic, mercury and selenium by atomic fluorescence spectrometry has been listed as GB method in GB / T5009.11-2003, GB / T5009.17-2003 and GB / T5009.93-2003. Microwave digestion has the advantages of fast, efficient, less loss and less reagent consumption. Has been widely