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A
determination of personal exposure to
VINYL CHLORIDE BY MIN I MONITOR
AB GC -9 Revision Date
3/20/81
3/31/83
Equipment
1 Perkin Elmer F-42 Automatic 1 for set up Instruction?,
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2 Spectra Physics SP4000 computl
analysis unit. See Appendix
3 Sample vials and seal for F-42
4 "REAL" minimonitor badges.
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5- Crimper for sample vial sealsw
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6. 5 cc syringe.
Reagents
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b
1. VCM standard gas - about 2100 ppm.
2. Dimethylacetamide (DMA).
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3* Activated carbon 20-40mesh "Darco".
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4. Extraction solvent. 30$ DMA, 70$ water
Preliminary Work
premeasured charge of Darco 20-4Q, jtffh charcoal is put into a "REAL"
minimonitor. The monitor Is worn
person during their work day. At
the end of the work day, the carboy
w-4 :
rftyoyed from the monitor and placed
in a sample vial, stoppered,and
ito the laboratory.
Ana 1ysis
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1 Be sure the F-42 conditions are set to match those in Appendix 1 and there is fire in the detector.
2.
Log Sheet.
same
3. Crimp seals on each sample.
4. Add 3 ml 0.1 extraction solvent
in on the VCM Monitor
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VAB.0001040804
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Analysis luonc.j
5. Prepare four (A) standards by filling four vials with standard gas.
Cap and seal. Add 3 ml solvent; f.
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6. Put the standards and samples Into the F-42 water bath in order with the standards first.
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7. Go to the SP 4000 and enter the needed Information as follows (Method in Appendix 2):
Press FI 9 enter Press FS 5 enter Press SF . enter
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Repeat for each sample in order.
Press ^ Press SH 1 enter Press MS i enter Press XX enter Press CP 194# samples 1 1 enter
At 9 enter
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8. Allow the samples to remain in the F-42 water bath for 1 hour at 90 C then Press PX1 enter on the SP 4000 and start button on the F-42.
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9. Record the results on the VCM Monitor Log Sheet and in the lab note book.
10. If manual calculation is needed, use following equation
PPM VCM TWA Standard Preparation
Area S
1. 1
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xCC Value x XF Value
The standards are prepared
ppm VCM in the gas by 0,^$
program listed in
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is an empirical
extraction solvent
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nitrogen standard gas Multiply.the i^Ln;,tfe|. .program* The
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Date;
Revision Date:
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Februa 1979
March 1983
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APPPfolX 1
F42 Conditions For Csrbon Analysis For VCH.
Analysis Coluam
40" x 1/8" Porapac Q
Water Bath
90 C
InJactor
100 c
Oven Tenperature
e
Detector Ttspiratur*
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m
Detector Range
Dosing Tine
i00u c 150 C 1p 1 5 sec*
*
A-
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Analysis Tint. Back Flush Tine Stabilisation Tina N~ Pressure Backflush Pressure Hydrogen Pressure Air Pressure
1*4 uin.
mm i *
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Tb following la thA 8F 4000 prbgron for * 4olng ptrioul dotlailcy uilyiii of
VCM on Carbon. If you do not.know how to ontar a progran Into tha IP 4000 sao your Suparvlaor.
Rotor tka following in ordor:
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Fraaa
Ft 9 aatar
Ch 2. 00 51
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RO 54
MS | `
TI25
HA 50
MM ppn VCM on carbon
FF
AP 2
AR I IB 1
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RT 205T3Q
R? 200T31
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t CF MN 5 FF 4 R1.05 HI.05 KVO.3
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t RT 135 CMoi a this la ttia retention tina for VCM
aura to uaa tM currant valua.)
KF 1000
CC 149 (Valid* only for 500 ppn std
Mfti* a,`dlffii*jeuc,gaa la
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rb ;* *J+ *,r < V '1 4
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MM ppn VCM
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Calibration Values For lodga.
BidgH arc eallbratod by tha following forau
K CT U
1
K Conntaut
C Concentration VCMv ppn
*a
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T Exposure Tina In Honrs
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1
W Microllter VCH. On Carbon
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213 296 538 534 541 562 594 606 610 625 566 R
ShS
Calibration Factor ( xy= i//v4Hf)
1.14 0.62 0.89 0.80 0.79 0.5Z
0.82 0.73
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