浩瀚色譜對比研究了大體積直接進樣填充柱氣相色譜法、頂空-氣相色譜法和吹掃捕集-氣相色譜法測定水中乙醛、丙烯醛和的方法.結果表明,;頂空法穩(wěn)定性好,線性范圍寬,相關性和精密度好,適合較高濃度水樣的分析;吹掃捕集法操作簡便,峰形好,檢出限低,回收率高,適合低濃度水樣的分析.頂空法和吹掃捕集法自動化程度高,均適用于大批量樣品分析.
本標準規(guī)定了用氣相色譜法測定水源水中的乙醛、丙烯醛。
本標準適用于測定水源水中乙醛、丙烯醛。如直接進樣，本法*低檢測濃度乙醛為。.24m g/L，丙烯醛為0.019 mg/L。若進行蒸餾濃縮，*低檢測濃度還可降低。
名稱：不銹鋼填充柱
規(guī)格：2m*4mm
型號：20%聚乙二醇-20M/6201
編號：20240806001
*高溫度：240°C
應用：GB/T 11934-1989 水源水中乙醛、丙烯醛衛(wèi)生檢驗標準方法 氣相色譜法
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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