原標(biāo)準(zhǔn)規(guī)定了工作場所空氣中醇胺類化合物（如乙醇胺）濃度的測定方法，主要采用液體吸收-氣相色譜法：
原理：使用硫酸溶液吸收空氣中的乙醇胺，經(jīng)氣相色譜儀分離，用氮磷檢測器（NPD）檢測。
采樣：串聯(lián)兩支各裝5.0 mL 0.01mol/L硫酸溶液的大型氣泡吸收管，以500 mL/min流量采集15分鐘空氣樣品。
色譜參考條件：
色譜柱：未指定具體型號（原標(biāo)準(zhǔn)可能使用填充柱，但注明可使用毛細(xì)管柱）
柱溫：160℃
汽化室溫度：250℃
檢測室溫度：250℃
載氣（氮氣）流量：40 mL/min 7
性能指標(biāo)：
檢出限：3×10?? μg/mL
最低檢出濃度：2×10?? mg/m3（按采集7.5L空氣樣品計）
測定范圍：3×10?? ～ 0.1 μg/mL
相對標(biāo)準(zhǔn)偏差：5.9%～6.7%
平均采樣效率：99% 7
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浩瀚色譜（山東）應(yīng)用技術(shù)開發(fā)有限公司，研制的《場所空氣中乙醇胺測定玻璃色譜柱應(yīng)用島津》，安裝在安捷倫，島津，賽默飛，瓦里安，布魯克，PE, 磐諾，
天瑞，天美，科創(chuàng)，魯南瑞虹，上分，捷島/科曉，川儀上，測定空氣中的乙醇胺柱效高，分離良好，峰型對稱，結(jié)果滿意。
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色譜柱：1.6m×3mm 玻璃柱，樹脂鍵合相–聚乙二醇丁二酸；
樹脂鍵合相–聚乙二醇丁二酸，色譜固定相，80 目～100 目。
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GBZ/T 300.139-2017 工作場所空氣有毒物質(zhì)測定 第139部分：乙醇胺
本標(biāo)準(zhǔn)代替GBZ/T 160.70-2004 工作場所空氣有毒物質(zhì)測定 醇胺類化合物
GBZ/T 300的本部分規(guī)定了工作場所空氣中乙醇胺的溶液吸收-氣相色譜法。
本部分適用于工作場所空氣中蒸氣態(tài)乙醇胺濃度的檢測。
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The original standard specifies the method for determining the concentration of alcohol amine compounds (such as ethanolamine) in the air of the workplace, mainly using liquid absorption gas chromatography:
Principle: Ethanolamine in the air is absorbed by sulfuric acid solution, separated by gas chromatography, and detected by nitrogen phosphorus detector (NPD).
Sampling: Connect two large bubble absorption tubes each containing 5.0 mL of 0.01mol/L sulfuric acid solution, and collect air samples at a flow rate of 500 mL/min for 15 minutes.
Chromatographic reference conditions:
Chromatographic column: No specific model specified (the original standard may use packed columns, but it states that capillary columns can be used)
Column temperature: 160 ℃
Vaporization chamber temperature: 250 ℃
Testing room temperature: 250 ℃
Carrier gas (nitrogen) flow rate: 40 mL/min 7
Performance indicators:
Detection limit: 3 × 10 ?? μ g/mL
Minimum detectable concentration: 2 × 10 ?? mg/m 3 (based on the collection of 7.5L air sample)
Measurement range: 3 × 10 ??~0.1 μ g/mL
Relative standard deviation: 5.9% to 6.7%
Average sampling efficiency: 99% 7
Haohan Chromatography (Shandong) Application Technology Development Co., Ltd. has developed the "Application of Shimadzu Glass Chromatography Column for Determination of Ethanolamine in Workplace Air", which has been installed in Agilent, Shimadzu, Thermo Fisher, Varian, and Bruker, PE, Panno,
Tianrui, Tianmei, Kechuang, Lunan Ruihong, Shangfen, Jiedao/Kexiao, Chuanyi, determined ethanolamine in the air with high column efficiency, good separation, symmetrical peak shape, and satisfactory results.
Chromatography column: 1.6m × 3mm glass column, resin bonded phase - polyethylene glycol succinic acid;
Resin bonded phase - polyethylene glycol succinic acid, chromatographic stationary phase, 80-100 mesh.
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GBZ/T 300.139-2017 Determination of Toxic Substances in Workplace Air Part 139: Ethanolamine
This standard replaces GBZ/T 160.70-2004 for the determination of toxic substances in workplace air - alcoholamine compounds
This section of GBZ/T 300 specifies the solution absorption gas chromatography method for ethanolamine in workplace air.
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