Arsenic, Mercury, Lead Detection Method In Phosphate Fertilizer

Along with the rapid development of the domestic fertilizer industry in recent years, as well as lower the threshold of the phosphate fertilizer production, the production of phosphate fertilizer enterprises is becoming more and more, with an unequal technique level. Requirement limits to heavy metals has not been established in industry of phosphate fertilizer in our country, it is to say no standard system is established. It exists the risk when using phosphate fertilizer solely or using it as the basic materials for other fertilizer without the control. As a result, the corresponding increase in product standard of setting limit to arsenic, mercury and lead is necessary.On the basis of the determination and monitoring results from Gansu province product quality supervision and inspection center for phosphate fertilizer products in recent years, microwave digestion-atomic fluorescence spectrophotometry determination of arsenic, mercury, lead in calcium superphosphate, diammonium phosphate are established, which can be as the method of accurate quantitative analysis of phosphate fertilizer samples.