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HJ 1013—2018《固定污染源廢氣非甲烷總烴連續(xù)監(jiān)測系統(tǒng)技術要求及檢測方法》中線性誤差指標的檢測方法與規(guī)程規(guī)范中常規(guī)線性誤差不同，稱為以引用誤差表示的示值誤差更合適，但分析表明，經線性校準后測量得到的示值誤差與手動計算得到的線性誤差步驟和結果是一致的。當儀器存在多種校準模式時，多點非線性校準得到的各項指標最佳，但是不同濃度區(qū)域對應的儀器靈敏度不同，信號微小變化對應的濃度變化差異大，容易被作為一種作弊手段對測量結果進行修正。基于信號-濃度線性關系設計的儀器，就應強制進行線性校準，或者采用信號值替代濃度值用于相關指標的檢測，才能更科學地評價儀器的計量性能。
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針對污染源廢氣中的非甲烷總烴,采用傳統(tǒng)方法操作過程繁復。基于這種認識浩瀚色譜對雙通道氣相色譜法展開了分析,結果表明采用該方法能夠通過一次進樣獲得兩組標樣數(shù)據(jù),能夠快速有效進行甲烷、氧和總烴定量分析,獲得精準度較高非甲烷總烴測定結果。
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名稱：PQ甲烷柱
規(guī)格：1.5m*1/8
*高溫度：250°C
編號：20231214001
應用：
1.環(huán)境空氣 總烴甲烷，非甲烷總烴的測定
2.固定污染源廢氣中總烴，甲烷，非甲烷總烴的測定
柱效高，分離好，氧無干擾
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The detection method for linear error indicators in HJ 1013-2018 "Technical Requirements and Detection Methods for Continuous Monitoring System of Non methane Total Hydrocarbons in Fixed Pollution Source Waste Gas" is different from the conventional linear error in regulatory specifications. The indication error represented by reference error is more appropriate. However, analysis shows that the indication error measured after linear calibration is consistent with the linear error steps and results calculated manually. When there are multiple calibration modes for the instrument, multi-point nonlinear calibration yields the best performance indicators. However, the sensitivity of the instrument varies in different concentration regions, and small changes in the signal correspond to significant differences in concentration changes. This can easily be used as a cheating method to correct measurement results. Instruments designed based on the linear relationship between signal and concentration should undergo mandatory linear calibration, or use signal values instead of concentration values for the detection of relevant indicators, in order to more scientifically evaluate the metrological performance of the instrument.
Traditional methods are cumbersome to operate for non methane total hydrocarbons in waste gas from pollution sources. Based on this understanding, the analysis of the dual channel gas chromatography method was carried out, and the results showed that this method can obtain two sets of standard sample data through a single injection, and can quickly and effectively perform quantitative analysis of methane, oxygen, and total hydrocarbons, obtaining high-precision non methane total hydrocarbon determination results.
Name: PQ Methane Column
Specification: 1.5m * 1/8
*High temperature: 250 ° C
Number: 20231214001
Application:
1. Determination of total hydrocarbons methane and non methane total hydrocarbons in ambient air
2. Determination of total hydrocarbons, methane, and non methane total hydrocarbons in exhaust gases from fixed pollution sources
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