浩瀚色谱对比研究了大体积直接进样填充柱气相色谱法、顶空-气相色谱法和吹扫捕集-气相色谱法测定水中乙醛、丙烯醛和的方法.结果表明,;顶空法稳定性好,线性范围宽,相关性和精密度好,适合较高浓度水样的分析;吹扫捕集法操作简便,峰形好,检出限低,回收率高,适合低浓度水样的分析.顶空法和吹扫捕集法自动化程度高,均适用于大批量样品分析.
本标准规定了用气相色谱法测定水源水中的乙醛、丙烯醛。
本标准适用于测定水源水中乙醛、丙烯醛。如直接进样，本法*低检测浓度乙醛为。.24m g/L，丙烯醛为0.019 mg/L。若进行蒸馏浓缩，*低检测浓度还可降低。
名称：不锈钢填充柱
规格：2m*4mm
型号：20%聚乙二醇-20M/6201
编号：20240806001
*高温度：240°C
应用：GB/T 11934-1989 水源水中乙醛、丙烯醛卫生检验标准方法 气相色谱法
The comparative study of large volume direct injection packed column gas chromatography, headspace gas chromatography, and purge and capture gas chromatography for the determination of acetaldehyde, acrolein, and other compounds in water was conducted using Haohan chromatography. The results showed that,; The headspace method has good stability, wide linear range, good correlation and precision, and is suitable for the analysis of high concentration water samples; The blowdown capture method is easy to operate, with good peak shape, low detection limit, and high recovery rate, suitable for the analysis of low concentration water samples. The headspace method and blowdown capture method have high automation and are both suitable for large-scale sample analysis
This standard specifies the use of gas chromatography to determine acetaldehyde and acrolein in source water.
This standard is applicable for the determination of acetaldehyde and acrolein in source water. If injected directly, the low detection concentration of acetaldehyde in this method is 24mg/L, with acrolein at 0.019 mg/L. If distillation concentration is carried out, the low detection concentration can also be reduced.
Name: Stainless Steel Filled Column
Specification: 2m * 4mm
Model: 20% Polyethylene Glycol-20M/6201
Number: 20240806001
*High temperature: 240 ° C
Application: GB/T 11934-1989 Hygienic inspection standard method for acetaldehyde and acrolein in source water - Gas chromatography method
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