Document qaaaMKkDYoxp1YYddk9Yj2wLM
COMPOUND GUIDE FOR 'r* .-M.Z&t-
3M #3500 ORGANIC VAPOR MONITOR
RECOMMENDED COMPOUNDS
The table below gives Lho sampling rates of many organic compounds for which the 3M #3500 Organic Vapor Monitor is recommended for accurate sampling. The table is not exhaustive and will be updateu periodically.
The (*) compounds have been subjected to an extensive amount of laboratory work in order to verify both the Sampling Rate and the Recovery Co-efficients. This thorough lab verification may eliminate as much as 10% error which may occur when using published diffusion co-efficient data to calculate sampling rates. The working range given is for normal humidity and is from the minimum detectable amount to the upper exposure limit. Individual Qualification Data Sheets are supplied for each of the (*) compounds.
The Sampling Rates given for the remaining compounds in this table were calculated from published diffusion co-efficients which have not yet been verified experimentally by the 3M laboratory. Sampling Rates .obtained in this manner may differ by as much as 10%, but usually no more than 4% from a value experimentally determined. However, results obtained are well within the accuracy and precision requi. red of monitoring systems by NIOSH/OSHA.
Recovery Co-efficients are not yet available for these compounds. The procedure would be the same as used by the 3M laboratory to determine the Recovery Co-efficients for the (*) compounds.
Compound
Acetone Acrylonitrile Ally! Alcohol Allyl Chloride Amyl Acetate Amyl Alcohol sec-Amyl Alcohol Amyl Butyrate Amyl iso-Butyrate Amyl Formate iso-Amyl Formate Amyl Propionate Benzene Benzonitrile Benzyl Acetate
Working Ranged (ppm-hours)
2.5 - 1800
Sampling Rate (cm^/min.)
\ 35.4
2.0-
300
37.1
2.5 - 1800
36.1
2.5 - 1800
34.5
0.8 - 2000
21.6
1.0 - 1500
25.3
1.0 - 2000
25.8
0.5 - 31)00
17.2
0.5 - 3000
17.6
0.8 - 2000
23.5
0.8 - 2000
23.9
0.8 - 2000
19.8
0.8 - 2000
33.0
0.8 - 2000
25.1
0.5 - 3000
21.2
Average Recovery Co efficien t
0.93 0.84
0.99
3M 005342
Compound
Working Ham e (a) Sampling Rate
..(ppm- hoursi
(cm3/ mind
Benzyl Alcohol Benzyl Chloride
0.8 - 2000 0.8- 2000
25.2 25.2
Bromoform
5.0 - 350
27.2
Butyl Acetate
1.0 - 2000
23.8
iso-Butyl Acetate
1.0 - 2000
Butyl Alcohol (Butanol) 1.2 - 1500
24.4 30.5
iso-Butyl Alcohol sec-Butyl Alcohol
1.2 - 1500 1.2 - 1500
31.2 31.5
t-Butyl Alcohol
1.2 - 1500
30.9
Butyl Ether Butyl Propionate Carbon Tetrachloride Cello^olves
1.0 - 2000 1.0 - 2000 5.0 - 500
19.0 21.5 26.5
Cellosolve
2.5 - 2000
(Ethylene glycol monoethyl ether)
Col 1 ofjolve Acct.iLo 0.8 - 3000 (Ethyleneglycol monoethyl ether acetate)
Methyl Cellosolve
2.5 - 1800
(Ethylene glycol mononethyl ether)
27.9 21.6 29.7" Jl
Diethylene Glycol
Diethylene Glycol Monoethyl Ether
2.5 - 2000 1.0 - 2500
25.8 21.6
Chlorobenzene Chloroform p-Cymene Diacetone Alcohol
0.8 - 2000 5.0 - 350 0.5 - 3000 1.0 - 2000
26.4 31.6 22.3 22.9
1, 2--Dibromoethane" Dibutyl Phthalate
2.5 - 500 0.8 - 3000
29.2 14.9
1, 1-Dichloroethane 2.5 - 350
32.5
1, 2-Dichloroethane (ethylene' dichloride)
2.5 - 350
32.1
Dich1oromethane (mei livlene chloride)
Dioxune
5.0 - 100 2.5- 1500
37.9 32.6
Diethyl Phthalate Ethy 1, Acetate Ethyl Benzene
0.8 - 2000 1.2 - 3000 0.8 - 2000
17.6 29.4 26.7
Ethy L Bromide
2.5 - 200
35.0
EthyI Butyrate
0.8 - 3000
23.7
Ethy Lene Chlorohydrin 2.5 - 200
34.1
Recovery Coef f l c lent;
1.02
0.97 0.92 0.98
3H 005343
Comoound
Working Rarqe^ Sampling Rate
(ppm-hours)
(cm'Vmin.)
Recovery Coefficient
Ethylene Dichloride
(see 1,2-Dichloroethane)
Ethyl Ether
2.5 - 100
32.5
Ethyl Propionate
1.2 - 3000
27.1
*Heptane
0.8 - 900
27.7
*Hexane
0.8 - 1500
28.2
Mesitylene
0.8 - 2000
23.5
MesiLyl Oxide
0.8 - 2000
26.9
Methyl Acetate
2.5- 500
34.6
Methyl Butyrate
1.0 - 2000
26.4
Methyl Chloroform
(see 1,1,1-Trichloroetbane)
Methyl isoButyrate
1.0 - 2000
26.5
Methyl1 isoButyl Ketone 2.0 - 1800
26.6
*Methyl Ethyl Ketone 2.5 - 1800
31.2
Methyl Propionate
1.0 - 1500
30.5
Methyl'Propyl Ketone 2.0 - 1500
28.1
Methylene Chloride
(see Dichloromethane)
Nitrobenzene
0.8- 2000
25.5
Octane
0.8 - 2000
21.8
Pentane
1.0 - 500
29.8
Perchloroethylene
(see Tetrachloroethylene)
Propyl Acetate
1.0 - 3000
27.2
iso-Propyl Acetate
1.0 - 3000
27.3
iso-Propyl Benzene
0.5 - 2000
24.0
*Stoddard Solvent
24.3
*Styrcne
0.8 - 2000
27.3
2-Tetrachloroctham
2.5 - 500
25.6
Tetrachloroethylene ( Perchloroelzhylenu)
2.5 - 500
28.2
*Toluene
0.8 - 2000
30.4
^Trichloroethylene
2.5 - 2000
28.0
1-Trichloi ooLliano (MuLhyl Chloroform)
2.5 - 500
28.1
2-Trichloroethane
2.5 - 500
28.0
*Vinyl Chloride
2.5 -
30
40.7
*m-Xylene
0.8 - 2000
25.6
o-Xylene
0.8 - 2000
25.7
p-Xylene
0.8 - 2000
23.7
1.04 0.95
0.95
1.00 0.97 0.99 1.00 0.90 1.00 1.00 1.00
(a) Working range values listed were determined at normal relative humidity. Upper limiLs may be sub.'.ianLiaiiy reduced at high relative humidity-
3M 005344
II. UNSUITABLE COMPOUNDS
The OVM is not recommended for the compounds listed below because of adverse or inadequate interactions with the sorbent material.
Compound
Carbon Monoxide Ethylene Oxide Formaldehyde Hydrogen Sulfide Isocyanates Methane, Ethane, Propane Methyl Alcohol (Methanol) Methyl Chloride Methyl, Dimethyl, Trimethyl Amines Organic Solids `i Sulfur Dioxide
These lists are not exhaustive. If you have a specific request not covered in this Guide, please write to Occupational Health and Safety Products' Division, 3M Company, 3M Center, St. Paul, MN 55101; or call on (612) 733-6234.
III. Calculation Procedure:*
1) Determine weight of analyte in micrograms (yg),.
2) Establish exposure time in minutes.
3) Fran Table I, Hecatme^ded Compounds obtain a) Sampling rate (cm /min.) b) Recovery Coefficient for (*) Compounds. c) A procedure for determining Recovery Coefficients is enclosed,
4) Calculate concentration by substituting values for the terms in the equation below:
mg = 1000 (weight of analyte) ____________________________ 3
m (sampling rate) (recovery co-efficient), (exposure time)
to kf
Determine ppm by multiplying the value obtained above for mg/m-* as follows:
mo ppm = -~-j x
24.45
m (molecular weight)
* See sample calculation on next page, a) ppm based on 25C, 760 urn Bg. 1-19-79 OVM-CGI
3M 005345
TABLE IV The 3.500 OVM as a grab sampler
Compound
1. Benzene 2. Cumene 3. Ethylbenzene 4. Styrene 5. Toluene 6. m-Xylene 7. n-Heptane 8. n-Hexane 9. 1,4-Dioxane 10. Acetone 11. Methyl Ethyl Ketone 12. Acrylonitrile 13. Ethyl Acetate 14. Carbon Tetrachloride 15. Chloroform 16. 1/2-Dichloroethane 17. Dich1oromethane 18. Tetrachloroethylene 19. Trichloroethylene 20. Vinyl Chloride
STEL (ppm)
(25) 75 125 125 150 150 500 125 50 1250 300 (30) 400 20 (10) (75) (250) 150 150 -
STEL x 15 min 60min/hr
(ppm-hours)
Detection Limit
(ppm-hours)
Peasibility
6.25 18.75 31.25 31.25 37.50 37.50 125.00 31.25 12.50 312.50 75.00
7.50 100.00
5.00 2.50 18.75 62.50 37.50 37.50
--
0.8 0.9 1.0 1.3 1.2 1.3 1.3 1.6 3.6 1.8 2.3 5.2 2.8 10.5 8.1 3.0 6.4 2.8 3.4
Yes Yes Yes ' Yes Yes Yes Yes Yes Yes Yes Yes Yes Yes No No Yes Yes Yes Yes
3M 00S346
SAMPLE CALCULATION
Weight of analyte (benzene) determined by gas chromatography:
27.2 micrograms
Exposure time = 7 hours (420 minutes)
To calculate the exposure concentration the following equation is used:
1. 1000 (weight of analyte) m (Sampling rate)(recovery coefficient)(exposure time)
Weight of analyte
= 27.2 micrograms (pg)
3
Monitor sampling rate
=33.0 cubic centimeters per minute (cnr/min.)
Recovery Coefficient
= 0.99
1000 nanograms (ng)
= 1 microgram (pg)
Substituting the numerical values and units into the equation above,
.2
mg ~m3
1000 na x 27.2 ug _usl
33,0
(0.99)(420 min)
=1.98 ng/cm3
min '
'
'
Since ng/cm3 = mg/m3 ,
^= 1.98 nT
To determine ppm, the following equation is used:
3. p_p_m___*m-q3- x 2-2--.-4----1--/-m---o--l-e--- x T---K------- ,, x76--0---m--m----H--q-a-
nr MW g/mole
273K P mm Hg
Based on 25C, 760 mm Hg the equation reduces to,
4n . _pp_m___=m-q3- x2-4--.-4--5---
nr MW Substituting for the molecular weight (M.W.) of benzene, 78.11 and the value obtained for1 mg/m'3.
ppm = 1.98 x 24.45 = 0.62 78.11
Weight of analyte is derived from an equation using nanograms, therefore conversion to micrograms is necessary in equation 2.
3M 005347
Compounds
TABLE IT RECOVERY COEFFICIENTS
Recovery Coefficient + 2a
Butyl propionate p-Cymene Dimethyl formamide Ethyl butyrate Ethyl propionate Methyl isobutyrate Diethyl phthalate Epichlorohydrin Mesityl Oxide Mesitylene
Amyl acetate* Benzonitrile* Benzyl chloride* n-Butyl ether* Cellosolve acetate* 1,2 Dibromoethane* Nitrobenzene*
ctil*Stin-
Performed by D. L. Morin
0.97 + 0.01 1.00 + 0.04 0.41 + 0.02 1.00 + 0.01 0.97 + 0.04 0.96 + 0.03 0.81 + 0.06 0.96 + 0.06 0.93 + 0.02 0.98 + 0.06
1.00 + 0;02 0.69 + 0.02 1.00 + 0.04 1.02 + 0.04 0.91 + 0.01 0.96 + 0.04 0.51 + 0.02
t Q.Oi-
3M 005348
