糙米中总硒及水溶态和可交换态硒的测定

摘要

The total selenium and aqueous and exchangeable selenium was fluorometrically determined in two samples of crude rice;one had been fertilized with selenium and the other had not.The results show that the selenium level of the former sample(total selenium is 0.075×10-6;aqueous and exchangeable selenium is 0.020×10-6) is higher than that of the latter(total selenium is 0.045×10-6;aqueous and exchangeable selenium is 0.010×10-6).%用DAN荧光法测定硒含量的研究表明,施加硒肥的糙米中总硒的质量分数为0.075×10-6,水溶态与可交换态硒的质量分数为0.020×10-6,明显高于未施加硒肥的糙米中总硒的质量分数值0.045×10-6及水溶态与可交换态硒的质量分数值0.010×10-6.这说明对于缺硒地区的水稻培育,施加硒肥是一种有效的措施.