An automated sequential injection system incorporating a sample pretreatment module was developed for the separation and preconcentration of ultra-trace copper in seawater without dilution.
将样品预处理模块与自动化顺序注射系统相结合，建立了未经稀释的海水中痕量铜的分离富集方法。
The amino acid analysis direct system was used to test the free-glycin in dairy drinks, and the methods for sample pretreatment and chromatographic parameters were studied in this paper.
本文用氨基酸分析仪测定含乳饮料中游离甘氨酸含量，研究了样品预处理方法和仪器色谱分离条件。
The key point of this system lies in the development of the pretreatment apparatus of sample gas, which features the combination of sampling, dedusting and filtering.
该分析系统的重点和难点在于开发了取样和净化一体化的样气预处理装置。
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