Test tube and test tube rack Constant temperature water bath pan, (40±2℃) No.2 glass filter with a funnel Balance (0.2mg-accurate) 4. ReagentsPreparation First, Place 1g after-cut sample (10mg-accurate) into a 250ml iodometric flask with a stopper or a triangular flask. Second, pour ...
Formaldehyde test method interference issues and detection limits are especially important when considering the emissions standard likely to be proposed for gas turbines. This paper summarizes key technical issues from earlier research, as well as recent research results related to the application of CARB...
关键词:人造板;甲醛释放量;检测方法中图分类号:$781.43文献标识码:BKeywords:Wood—basedpanels;Keywords:Formaldehydeemission;testmethodZhangGencheng,WLIJianguo(shandongsupervisionandinspectioninstituteforproductquality,Jinan250103;Sbandongprovincialkeylaboratoryoftesttechnologyformaterialchemicalsafety)Abstract:Thispaper...
anew method reaserch for low porosity and low permeability gas reservoir logging 新的方法reaserch为低多孔性和低渗透性气体水库采伐[translate] aCOPPER-PLATED (are for buckshot) COPPER-PLATED (是为大型铅弹)[translate] aIf exempt, vendor needs to send certificate of exemption for file. 如果豁免,供...
2) formolite test 测定硫酸甲醛值的方法3) Research of Formaldehyde Determination Methods 甲醛测定方法研究4) formaldehyde determination 甲醛测定 1. Research of external factors to affect formaldehyde determination in indoor air 影响室内空气甲醛测定外在因素的研究 更多例句>> 5) acetylacetone method ...
1.1本试验方法涵盖了空气中甲醛(HCHO)和其他醛的测定程序.本试验方法针对甲醛,但经修改后,可检测到其他十四种醛. 1.2本试验方法涉及通过含有涂有2,4-二硝基苯肼(DNPH)试剂的硅胶的滤芯吸入空气.醛和酮很容易与DNPH试剂形成稳定的衍生物.利用高效液相色谱法(HPLC)分析DNPH衍生物中的醛和酮.取样程序是对美国EPA方...
The desiccator test method was used to evaluate the formaldehyde ... H Zhang,JIN Liu,X Lu - 《Wood Research》 被引量: 5发表: 2013年 Substitution of urea-formaldehyde by renewable phenolic compound for environmentally appropriate production of particleboards Different percentages of cardanol were ...
interfere in the analysis and can lead to erroneous test results. Table 5.3.Various approaches for formaldehyde testing MethodPrincipleReagentsTemp. (°C)Remarks BS 6806 Part 1Acid hydrolysis6M H2SO425Total formaldehyde JIS 1041Soaking in waterWater, surfactant, 1 hour, colour formation with ...
Currently involved with acetyl acetone method, phenol reagent method and AHMT method a sulfurous acid, magenta, chromotropic acid method, phloroglucinol method, catalytic photometric method, etc., each test method of lay particular stress on the application area is different, and each has its ...
(for example Öko-Tex Standard 100) thatset limitsfor free or easily freed formaldehyde in textiles. These limits are always specified by a particular test method for formaldehyde because there are significant differences in results between the various formaldehyde test methods. For example,finished ...