Page:NIOSH Manual of Analytical Methods - 5038.pdf/1

 TRIPHENYL PHOSPHATE

(C6H5)3PO4

MW: 326.28

METHOD: 5038, Issue 1

CAS: 115-86-6

5038

RTECS: TC8400000

EVALUATION: PARTIAL

OSHA : 3 mg/m 3 NIOSH: 3 mg/m 3 ACGIH: 3 mg/m 3

PROPERTIES:

Issue 1: 15 August 1994

solid; MP 50 °C; BP 245 °C @ 11 mm Hg; d 1.27 g/mL @ 60 °C; VP <0.05 kPa (<0.1 mm Hg); flash point 220 °C

SYNONYMS: phosphoric acid triphenyl ester; TPP

SAMPLING SAMPLER:

FILTER (0.8-µm cellulose ester membrane)

MEASUREMENT TECHNIQUE:

GAS CHROMATOGRAPHY, PHOSPHORUS MODE

ANALYTE:

triphenyl phosphate

EXTRACTION:

10 mL anhydrous ether, 30 min

INJECTION VOLUME:

5 µL

FPD

IN

FLOW RATE: 1 to 3 L/min VOL-MIN: -MAX:

10 L @ 3 mg/m 3 400 L

SHIPMENT:

routine

SAMPLE STABILITY:

not determined

BLANKS:

2 to 10 field blanks per set

BULK SAMPLE:

One bulk sample should be submitted to laboratory in a glass container with a Teflonlined cap. The label should match air samples.

ACCURACY RANGE STUDIED:

1.25 to 6.99 mg/m 3 [1] (100-L sample)

BIAS:

- 1.37%

ˆ rT): OVERALL PRECISION (S

0.066 [1]

ACCURACY:

± 11.24

TEMPERATURE-INJECTION: -DETECTOR: -COLUMN:

250 °C 250 °C 210 °C

CARRIER GAS:

N 2, 50 mL/min

COLUMN:

6-ft X 1/8-in stainless steel, packed with 5% OV-101 on 100/120 mesh Supelcoport

DETECTOR:

H 2, 20 mL/min air, 150 mL/min

CALIBRATION:

standard solutions of triphenyl phosphate in anhydrous ether

RANGE:

30 to 900 µg per sample

ESTIMATED LOD: 10 µg per sample [1] PRECISION (Sr):

0.051 [1]

APPLICABILITY: The working range is 0.3 to 20 mg/m 3 for a 100-L air sample. This method may be adapted to other phosphates of relatively low volatility with appropriate changes in chromatographic conditions.[1] A non-polar capillary column may be used for better resolution and sensitivity.

INTERFERENCES: None identified.

OTHER METHODS: This method revises S210 [1].

NIOSH Manual of Analytical Methods (NMAM), Fourth Edition, 8/15/94