環(huán)境空氣和廢氣 吡啶的測定 ，芝麻香白酒，3-甲硫基丙醇，室內(nèi)空氣，焦?fàn)t煤氣，煉廠氣，天然氣，變壓器油，多氯聯(lián)苯，植物油，增塑劑，塑化劑，過氧化物，口罩，醫(yī)療器械，環(huán)氧乙烷

環(huán)境空氣和廢氣 吡啶的測定 
環(huán)境空氣和廢氣 吡啶的測定  詳細(xì)信息：

名稱：毛細(xì)管柱
固定相·：交聯(lián)鍵合聚乙二醇
規(guī)格：30m*0.25mm*0.5um
型號：HH-INNOWAX
應(yīng)用：HJ 1219-2021 環(huán)境空氣和廢氣 吡啶的測定 氣相色譜法

浩瀚色譜（山東）應(yīng)用技術(shù)開發(fā)有限公司用吸收液采集廢氣樣品,頂空進樣,采用氣相色譜法測定進樣氣體中吡啶的含量.用HH-INNOWAX毛細(xì)管色譜柱分離,氫火焰離子化檢測器測定.優(yōu)化的試驗條件如下:①采用多孔玻板吸收瓶采集樣品;②吸收液的體積為45mL;③采樣流量為0.5L·min~(-1);④樣品在4℃下,7d內(nèi)完成分析;⑤吸收液的pH大于12;⑥加入3g氯化鈉調(diào)節(jié)吸收液離子強度;⑦頂空溫度為80℃,頂空平衡時間為30min.吡啶的質(zhì)量濃度在100mg·L~(-1)以內(nèi)與其對應(yīng)的峰面積呈線性關(guān)系,檢出限為0.05 mg·m~(-3).對3個不同濃度水平的吡啶標(biāo)準(zhǔn)氣體進行測定,相對誤差為-8.0%~-4.7%,測定值的相對標(biāo)準(zhǔn)偏差(n=6)為1.3%~7.8%.


Ambient air and waste gas - Determination of pyridine
Determination of Ambient Air and Exhaust Pyridine Details:

Name: capillary column
Stationary phase: cross-linked polyethylene glycol
Specifications: 30m*0.25mm*0.5um
Model: HH-INNOWAX
Application: HJ 1219-2021 Determination of Ambient Air and Waste Gas-Pyridine Gas Chromatography

Haohan Chromatography (Shandong) Application Technology Development Co., Ltd. collects waste gas samples with absorbing liquid, injects headspace samples, and uses gas chromatography to determine the content of pyridine in the injected gas. Separation with HH-INNOWAX capillary column, hydrogen flame ionization detector Determination. The optimized test conditions are as follows: ① The sample was collected by a multi-hole glass plate absorption bottle; ② The volume of the absorption solution was 45 mL; ③ The sampling flow rate was 0.5 L·min~(-1); ④ The sample was completed within 7 days at 4 °C Analysis; ⑤ The pH of the absorption solution is greater than 12; ⑥ Add 3 g of sodium chloride to adjust the ionic strength of the absorption solution; ⑦ The headspace temperature is 80℃, and the headspace equilibrium time is 30min. The mass concentration of pyridine is 100mg·L~(-1) There is a linear relationship with its corresponding peak area within the range, and the detection limit is 0.05 mg·m~(-3). Three different concentration levels of pyridine standard gas were measured, and the relative error was -8.0%~-4.7%. The relative standard deviation (n=6) of 1.3%~7.8%.