MICROWAVE-ENERGY FOR ACID DECOMPOSITION AT ELEVATED-TEMPERATURES AND PRESSURES USING BIOLOGICAL AND BOTANICAL SAMPLES
MICROWAVE-ENERGY FOR ACID DECOMPOSITION AT ELEVATED-TEMPERATURES AND PRESSURES USING BIOLOGICAL AND BOTANICAL SAMPLES
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DOI：
10.1021/ac00125a038
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发表时间：
1986-10-01
影响因子：
7.4
通讯作者：
JASSIE, LB
中科院分区：
文献类型：
--
作者：
KINGSTON, HM;JASSIE, LB
描述了密闭容器微波消解系统。演示了有机样品酸分解过程中密闭 Teflon PFA 容器中高温和压力的原位测量。生物和植物 SRM 酸分解的温度曲线通过溶解酸进行建模。比较了硝酸、氢氟酸、硫酸和盐酸的微波功率吸收。将方程应用于酸性微波相互作用，以预测样品溶解过程中达到目标温度所需的时间。建议采取反应控制技术和安全预防措施。
A closed vessel microwave digestion system is described. In situ measurement of elevated temperatures and pressures in closed Teflon PFA vessels during acid decomposition of organic samples is demonstrated. Temperature profiles for the acid decomposition of biological and botanical SRMs are modeled by the dissolving acid. Microwave power absorption of nitric, hydrofluoric, sulfuric, and hydrochloric acids is compared. An equation is applied to acid microwave interactions to predict the time needed to reach target temperatures during sample dissolution. Reaction control techniques and safety precautions are recommended.