Page:NIOSH Manual of Analytical Methods - 2503.pdf/1

 MEVINPHOS

(CH3O)2PO2C(CH3)=CHC(O)OCH3; C7H13 O6P METHOD: 2503, Issue 2

MW: 224.27

CAS: - -

CLASS B

OSHA : 0.01 ppm (skin) NIOSH: Group I Pesticide [1] ACGIH: 0.1 mg/m 3 (skin); 0.3 mg/m 3 STEL (1 ppm = 9.16 mg/m 3 @ NTP)

RTECS:

Issue 1: 15 February 1984 Issue 2: 15 August 1992

PROPERTIES: liquid; d 1.25 g/mL @ 20 C; BP 325 C; MP 20.6 °C; VP 0.4 Pa (0.003 mm Hg; 4 ppm) 20 °C

SYNONYMS: dimethyl 2-methoxycarbonyl-1-methylethenyl phosphate; Phosdrin; CAS #7786-34-7.

SAMPLING SAMPLER:

SOLID SORBENT TUBE (extracted Chromosorb 102, 100 mg/50 mg)

MEASUREMENT TECHNIQUE:

GAS CHROMATOGRAPHY, FPD

ANALYTE:

phosphorus

DESORPTION:

1 mL toluene; stand 30 min

INJECTION VOLUME:

5 µL

FLOW RATE: 0.2 to 1 L/min VOL-MIN: -MAX:

15 L 240 L

SHIPMENT:

routine

SAMPLE STABILITY:

at least 7 days @ 25 C [2]

TEMPERATURE-INJECTION: -DETECTOR: -COLUMN:

BLANKS:

2 to 10 field blanks per set

CARRIER GAS:

N 2 or He, 28 mL/min

COLUMN:

2 m x 2 mm glass; Super-Pak 20M or equivalent

CALIBRATION:

Mevinphos in toluene

RANGE:

5 to 55 µg per sample [2]

ACCURACY RANGE STUDIED: 0.027 to 0.145 mg/m 3 [2] (260-L samples) BIAS:

not significant [2]

OVERALL PRECISION (sr): 0.069 [2]

190 °C 215 °C 170 °C

ESTIMATED LOD: 0.2 µg per sample [2] PRECISION (sr):

0.035 [2]

APPLICABILITY: The working range is 0.003 to 0.3 ppm (0.025 to 0.28 mg/m 3) for a 200-L air sample. The method can measure a STEL concentration of < 0.4 mg/m 3.

INTERFERENCES: None identified.

OTHER METHODS: This is Methods S296 [3] in a revised format.

NIOSH Manual of Analytical Methods (NMAM), Fourth Edition, 8/15/93