人造板VOCs采样中吸附剂的选用与吸附性能优化  

Selection of adsorbent and optimization of adsorption performance in VOCs sampling of wood-based panel

作　　者：马郡鸿 卢志刚 沈隽[1] MA Junhong;LU Zhigang;SHEN Jun(Material Science and Engineering College,Northeast Forestry University,Harbin 150040,China;Nanjing Customs Industrial Products Testing Center,Nanjing 210019,China)

机构地区：[1]东北林业大学材料科学与工程学院,哈尔滨150040 [2]南京海关工业产品检测中心,南京210019

出　　处：《林业工程学报》2023年第1期73-79,共7页Journal of Forestry Engineering

基　　金：中央财政林业科技推广示范项目(黑[2021]TG18);国家自然科学基金面上项目(31971582)。

摘　　要：人造板挥发性有机化合物(VOCs)采样中的吸附剂性能对检测结果具有直接影响。选用5种吸附剂对芳香烃、萜烯、烷烃、酯类、芳香醇和脂肪醇类等73种有机化合物单体进行检测分析,以采样管次级目标单体的色谱保留面积占初级和次级目标单体色谱保留面积3%为限,设定穿透率指标,确定吸附剂适宜的采样流量和采样体积,优化吸附性能。结果表明:选用Tenax TA吸附剂,采样质量为2 000 ng、采样流量为150 mL/min和采样体积为9 L时,除苯、3-甲基戊烷、正己烷、环己烷、甲基环己烷、α、β-蒎烯和莰烯外,其余C6~C16有机化合物单体无明显穿透现象;选用CarbosieveTMS-Ⅲ和Carbopack B混合吸附剂,采样质量为2 000 ng、流量为150 mL/min和体积为15 L时,C3~C16单体无明显穿透现象;选用活性炭吸附剂,C3~C16有机化合物单体除苯甲醇、2-乙基-1-己醇、和丁基羟基甲苯外,均无明显穿透现象;单独选用CarbosieveTMS-Ⅲ和Carbotrap B作为吸附剂,单体检测存在多次穿透现象。相比而言,CarbosieveTMS-Ⅲ和Carbopack B混合吸附剂吸附性能最佳。The performance of adsorbents plays an important role in the detection of volatile organic compounds(VOCs) from wood-based panels. In this study, five adsorbents were selected to detect and analyze 73 organic compounds, including aromatic hydrocarbons, terpenes, alkanes, esters, aromatic alcohols, and fatty alcohols. With the chromatographic retention area of the secondary target monomers of the sample tube accounting for 3% of the chromatographic retention area of the total primary and secondary target monomers, the penetration index was set, and the appropriate sampling flow and sampling volume of the adsorbent were determined to optimize the adsorption performance. In the test, the adsorption tube was aged firstly, and the standard mixed solution was prepared. The two adsorption tubes were connected in series with high purity nitrogen and atmospheric sampler, respectively. The prepared standard mixed solution was captured in the adsorption tube through the appropriate sampling flow and sampling time, and then the adsorption tube was detected and analyzed by ATD-GC/MS. Finally, the penetration rate of the adsorption tube was calculated. The results showed that no significant penetration of C6-C16monomers was observed except for benzene, 3-methylpentane, n-hexane, cyclohexane, methyl cyclohexane, α, β-pinene and camphene, when Tenax TA was used as an adsorbent, with a sampling mass of 2 000 ng, a sampling flow rate of 150 mL/min and a sampling volume of 9 L. The mixed adsorbents of CarbosieveTMS-Ⅲ and Carbopack B were used. The sampling mass was 2000 ng, the sampling flow was 150 mL/min, and the sampling volume was 15 L. No obvious penetration of C3-C16monomers was observed. No obvious penetration of C3-C16organic compounds except for benzyl alcohol, 2-ethyl-1-hexanol and butyl hydroxy toluene was observed when the activated carbon adsorbent was used. When CarbosieveTMS-Ⅲ and Carbotrap B were used as adsorbents alone, multiple penetrations occurred in the monomer detection. In comparison, CarbosieveTMS-Ⅲ

关 键 词：人造板 挥发性有机化合物(VOCs) 吸附剂 采样参数 穿透率 

分 类 号：S715.3[农业科学—林学]