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ASTM D4858-2013测定润滑剂对二冲程循环汽油发动机预然倾向的标准试验方法Standard Test Method for Determination of the Tendency of Lubricants to Promote Preignition in Two-Stroke-Cycle Gasoline Engines
ASTM D4858-2013测定润滑剂对二冲程循环汽油发动机预然倾向的标准试验方法Standard Test Method for Determination of the Tendency of Lubricants to Promote Preignition in Two-Stroke-Cycle Gasoline Engines...
2022-03-14 21:36:58浏览:44
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ASTM D6209-2013测定环境空气中气态和颗粒多环芳香烃的试验方法(用气相色谱/质谱分析的背面吸着剂的滤膜的收集)Standard Test Method for Determination of Gaseous and Particulate Polycyclic Aromatic Hydrocarbons in Ambient Air (Collection on Sorbent-Backed Filters with Gas Chromatographic/Mass Spectrometri
ASTM D6209-2013测定环境空气中气态和颗粒多环芳香烃的试验方法(用气相色谱/质谱分析的背面吸着剂的滤膜的收集)Standard Test Method for Determination of Gaseous and Particulate Polycyclic Aromatic Hydrocarbons in Ambient Air (Collection on Sorbent-Backed Filters with Gas Chromatographic/Mass Spectrometric Analysis)...
2022-03-14 21:36:48浏览:36
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ASTM RR/D02-1679-2009建立ASTM D5291. 09精度说明的实验室研究 石油产品和润滑油中碳、氢、氮的仪器测定标准试验方法Interlaboratory Study to Establish Precision Statements for ASTM D5291. 09,Standard Test Methods for Instrumental Determination of Carbon,Hydrogen,and Nitrogen in Petroleum Products
ASTM RR/D02-1679-2009建立ASTM D5291. 09精度说明的实验室研究 石油产品和润滑油中碳、氢、氮的仪器测定标准试验方法Interlaboratory Study to Establish Precision Statements for ASTM D5291. 09,Standard Test Methods for Instrumental Determination of Carbon,Hydrogen,and Nitrogen in Petroleum Products and Lubricants...
2022-03-14 21:36:42浏览:55
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ASTM D2777-2013D19水委员会适用试验方法精度及偏差的测定规程Standard Practice for Determination of Precision and Bias of Applicable Test Methods of Committee D19 on Water
ASTM D2777-2013D19水委员会适用试验方法精度及偏差的测定规程Standard Practice for Determination of Precision and Bias of Applicable Test Methods of Committee D19 on Water...
2022-03-14 21:36:41浏览:42
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ASTM E975-2013近无规结晶取向钢中残留奥氏体的X射线测定规程Standard Practice for X-Ray Determination of Retained Austenite in Steel with Near Random Crystallographic Orientation
ASTM E975-2013近无规结晶取向钢中残留奥氏体的X射线测定规程Standard Practice for X-Ray Determination of Retained Austenite in Steel with Near Random Crystallographic Orientation...
2022-03-14 21:36:34浏览:54
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ASTM C1636-2013六氟化铀中铀-232的测定指南Standard Guide for the Determination of Uranium-232 in Uranium Hexafluoride
ASTM C1636-2013六氟化铀中铀-232的测定指南Standard Guide for the Determination of Uranium-232 in Uranium Hexafluoride...
2022-03-14 21:36:31浏览:45
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聚乙二醇化精氨酸脱亚胺酶的HPLC法测定
建立了分子排阻色谱-高效液相色谱法测定聚乙二醇化精氨酸脱亚胺酶(PEG-1).使用凝胶色谱柱,以0.05 mol/L磷酸缓冲液(pH 7.3)∶甲醇(80∶20)为流动相,检测波长220 nm.PEG-1在0.2~1.2 mg/ml范围内线性关系良好.回收率为96.32%,RSD为1.74%....
2020-07-10 14:39:05浏览:41
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生物素中有关物质的HPLC法测定
建立了高效液相色谱法测定生物素的有关物质.采用C18色谱柱,以16.7 mmol/L磷酸盐缓冲液(pH 2.9)∶甲醇为流动相,梯度洗脱,检测波长210 nm.在上述色谱条件下生物素与各中间体及降解产物均能有效分离,4种己知有关物质在1~20 μg/ml范围内线性关系良好,平均回收率为93.3%~99.3%,最低检测限分别为0.365、0.280、0.255和0.480 μg/ml....
2020-06-12 15:44:27浏览:1407
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乙二醇产品中水含量的测定过程和探讨
水含量是衡量聚酯级乙二醇产品质量等级的一项极为重要的指标,该指标规定:优等品乙二醇水含量不得大于0.1%(ω)。通过介绍乙二醇产品水含量测定的原理、过程,对测定过程中的各种影响因素进行了分析和探讨,总结概括出乙二醇产品水分含量测定的正确方法及注意事项,从各个方面减小测定误差,从而保证了分析的准确度。...
2020-06-12 15:05:59浏览:1398
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乙二醇产品中水含量的测定过程和探讨
水含量是衡量聚酯级乙二醇产品质量等级的一项极为重要的指标,该指标规定:优等品乙二醇水含量不得大于0.1%(ω)。通过介绍乙二醇产品水含量测定的原理、过程,对测定过程中的各种影响因素进行了分析和探讨,总结概括出乙二醇产品水分含量测定的正确方法及注意事项,从各个方面减小测定误差,从而保证了分析的准确度。...
2020-03-23 18:36:02浏览:1402
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