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211U BUTYL ACRYLATE (+) 丙烯酸丁酯 Butyl acrylate CH2=CHCO2C4H9 5-60ppm,準(zhǔn)確度誤差另一方面來(lái)源于使用條件,關(guān)健是配合使用的采相器具,使用時(shí)計(jì)量體積應(yīng)該準(zhǔn)確。否則即使檢測(cè)管質(zhì)量再好,由于通過(guò)檢測(cè)管的氣樣達(dá)不到規(guī)定要求,也會(huì)造成較大誤差。對(duì)對(duì)此我們推篤采用醫(yī)用注器作為采樣工具,使用“先計(jì)量后吸入"方法進(jìn)行操作,雖然稍嫌麻煩但可使測(cè)量誤差降到Z低。
更新時(shí)間:2024-12-18
在線留言丙烯酸丁酯211U Butyl acrylate CH2=CHCO2C4H9 5-60ppm
1. PERFORMANCE
1) Measuring range :5-60 ppm
Number of pump strokes 2(200ml)
2) Sampling time :3 minutes/2 pump strokes
3) Detectable limit :0.5 ppm
4) Shelf life :2 years
5) Operating temperature :0~40℃
6) Temperature compensation :Necessary(See "TEMPERATURE CORRECTION TABLE")
7) Reading :Direct reading from the scale calibrated by 2 pump strokes
8) Colour change :Yellow→Pale blue
2. RELATIVE STANDARD DEVIATION
RSD-low:15% RSD-mid.:10% RSD-high:10%
3. CHEMICAL REACTION
Chromium oxide is reduced.
CH2=CHCO2(CH2)3CH3+Cr6+H2SO4→Cr3+
4. CALIBRATION OF THE TUBE
GAS CHROMATOGRAPHY
5. INTERFERENCE AND CROSS SENSITIVITY
ppm
5
10
20
40
60
GAS To pump
DEHUMIDIFIER
(White)
Tube No.
211U BUTYL ACRYLATE
Substance Interference Coexistence
Alcohols Similar stain is produced. Higher readings are given.
Paraffin (moref inth haynd Cro3)carbons FIG.2 WDahrok lber roewang.ent is changed to 〃
Halogenated hydrocarbons 〃〃
Esters 〃〃
Aromatic hydrocarbons FIG.1 〃〃
TEMPERATURE CORRECTION TABLE
Scale True Concentration (ppm)
Readings 0℃ 10℃ 20℃ 30℃ 40℃
(ppm) (32°F) (50°F) (68°F) (86°F) (104°F)
60 105 80 60 45 32
40 68 54 40 30 22
20 32 26 20 15 11
10 15 13 10 8 5
5 8 7 5 4 3
0
20
30
10
50
60
40
80
100
90
70
Toluene〔ppm〕?
FIG.1 Influence of Toluene
Butyl acrylate
indicating value 〔ppm〕
10 20 30 40 50 0
20
30
10
50
60
40
80
100
90
70
Hexane〔ppm〕?
FIG.2 Influence of Hexane
Butyl acrylate
indicating value 〔ppm〕
100200300400500600700
(NOTE)
Butyl acrylate have the same sensitivity at 20℃ to Methyl acrylate.
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