Page:NIOSH Manual of Analytical Methods - 2552.pdf/1
| OSHA | 10 ppm | PROPERTIES | flammable liquid; den = 0.9574 g/mL @ 20°C; BP = 80.5°C; VP = 65 mm Hg @ 20°C; Flash Point = -3°C; FP = -76.7°C; Vapor Density = 2.95. |
| NIOSHI | 10 ppm | ||
| ACGIH | 2 ppm (skin notation) (1 ppm = 3.52 mg/m3 |
SYNONYMS: Methoxycarbonylethylene, Methyl ester of acrylic acid, Methyl propenoate, 2-propenoic acid methyl ester.
| SAMPLING | MEASUREMENT | ||
| SAMPLER: | SOLID SORBENT TUBE (Anasorb CMS, 150/75 mg) |
TECHNIQUE: | GAS CHROMATOGRAPHY, FID |
| FLOW RATE: | 0.01 to 0.2 L/min | ANALYTE | methyl acrylate |
| VOL-MIN: -MAX: |
1 L @ 10 ppm 5 L |
DESORPTION: | 1 mL of carbon disulfide with agitation. |
| INJECTION VOLUME: | 1 μL | ||
| SHIPMENT: | Keep cold; pack securely for shipment. | TEMPERATURE -INJECTION -DETECTOR -COLUMN |
250°C 300°C 35°C (hold 3 min) to 150°C (8°C/min) |
| SAMPLE STABILITY: | 30 days @ 5°C | ||
| BLANKS: | 2 - 10 field blanks per set | CARRIER GAS: | He (2.6 mL/min) |
| ACCURACY | COLUMN: | Capillary, fused silica, 30-m x 0.53-mm ID; 3μm film crossbonded® 35% diphenyl-65% dimethyl polysiloxane or equivalent | |
| RANGE STUDIED: | Not studied. | ||
| BIAS | Not determined | CALIBRATION: | Solutions of methyl acrylate in CS2 |
| OVERALL PRECISION (S,T): | Not determined. | RANGE: | 1.9 to 172.3 μg per sample [1] |
| ACCURACY: | Not determined. | ESTIMATED LOD: | 0.5 ug per sample [1] |
| PRECISION (S,): | 0.007 [1] | ||
APPLICABILITY: The working range is 0.11 to 9.79 ppm (0.39 to 34.5 mg/m3 for a 5 L air sample [1]. Method is applicable to any sampling environment where methyl acrylate is present in the vapor state.
INTERFERENCES: Any compound eluting during the analysis and having a similar retention time.
OTHER METHODS: This method updates NMAM 1459 [2] which is Method S38 from the 2nd edition of the NIOSH Manual of Analytical Methods [3]. Improvements include but are not limited to the following: smaller volume of desorption solvent required, desorption efficiency (DE) results were improved by using a different solid sorbent tube, and a lower LOD/LOQ was established [1]. A storage stability study was completed and was found acceptable with a 105.3% recovery after 4 weeks at 5°C [1].
NIOSH Manual of Analytical Methods (NMAM), Fourth Edition