TETRAETHYL LEAD (as Pb)
Pb(C2H5)4
MW: 323.44
METHOD: 2533, Issue 2
CAS: 78-00-2
2533
RTECS: TP4550000
EVALUATION: FULL
OSHA : 0.075 mg/m 3 (as Pb; skin) NIOSH: 0.075 mg/m 3 (as Pb; skin) ACGIH: 0.1 mg/m 3 (as Pb; skin)
Issue 1: 15 August 1987 Issue 2: 15 August 1994
PROPERTIES:
liquid; d = 1.653 g/mL @ 20 °C; BP 200 °C (dec.); MP -130 to -138 °C; VP 27 Pa (0.2 mm Hg; 2.2 g/m 3) @ 20 °C
SYNONYMS: TEL; lead tetraethyl
SAMPLING
MEASUREMENT
SAMPLER:
SOLID SORBENT TUBE (XAD-2 resin, 100 mg/50 mg)
TECHNIQUE:
GAS CHROMATOGRAPHY, PHOTOIONIZATION DETECTOR
FLOW RATE:
0.01 to 1.0 L/min
ANALYTE:
tetraethyl lead
VOL-MIN: -MAX:
30 L 200 L
DESORPTION:
1 mL pentane; stand 30 min
SHIPMENT:
routine
INJECTION VOLUME:
SAMPLE STABILITY:
at least 1 week @ 25 °C [1]
FIELD BLANKS:
2 to 10 field blanks per set
TEMPERATURE-INJECTOR: -MANIFOLD: -PID: -COLUMN: CARRIER GAS: COLUMN:
ACCURACY RANGE STUDIED:
BIAS:
0.045 to 0.20 mg/m 3 (as Pb) (120-L samples) [1] 5.6%
5 µL 185 °C 200 °C 210 °C 75 °C
N 2, 20 mL/min
3 m x 3-mm OD stainless steel packed with 5% Carbowax 20M on 80/100 mesh Chromosorb WHP
CALIBRATION:
standard solutions of tetraethyl lead in pentane
RANGE:
2 to 30 µg (as Pb) per sample
ˆ ): 0.087 [1] OVERALL PRECISION (S rT
ESTIMATED LOD: 0.1 µg (as Pb) per sample [1]
ACCURACY:
PRECISION (Sr):
± 20.9%
0.067 @ 4.3 to 17 µg (as Pb) per sample
APPLICABILITY: The working range is 0.017 tp 0.23 mg/m 3 (as Pb) for a 120-L air sample.
INTERFERENCES: None identified. The chromatographic column or separation conditions may be changed to circumvent interference problems.
OTHER METHODS: This revises Method S383 [2].
NIOSH Manual of Analytical Methods (NMAM), Fourth Edition, 8/15/94
