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Air Quality Criteria for Lead Volume II of II - (NEPIS)(EPA) - US ...

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AX4-41<br />

Table AX4-11 (cont’d). Summary <strong>of</strong> Selected Measurements <strong>of</strong> Urine <strong>Lead</strong> Levels in Humans<br />

Reference, Study<br />

Location, and Period Study Description Urine <strong>Lead</strong> Measurement Comment<br />

Asia<br />

Araki et al. (1986,<br />

1990)<br />

Japan<br />

NR<br />

Lee et al. (1990)<br />

Korea<br />

NR<br />

Schwartz et al.<br />

(2000a), Lee et al.<br />

(2001)<br />

Korea<br />

1997-1999<br />

Design: cross-sectional<br />

Subjects: adult (n = 19) male, gun metal foundry<br />

workers, age range 34-59 yr.<br />

Biomarker measured: urine lead<br />

Analysis: AAS<br />

Design: cross-sectional<br />

Subjects: adults (n = 95) male workers in lead<br />

smelting, battery manufacture, PVC-stabilizer<br />

manufacture facilities, age range: 19-64 yrs;<br />

reference subjects (n = 13), age range 22-54 yr.<br />

Biomarker measured: DMSA (10 mg/kg)provoked<br />

urine lead<br />

Analysis: GFAAS<br />

Design: Cross-sectional<br />

Subjects: Adult lead (inorganic) workers<br />

(n = 798, 634 males), age range 18-65 yrs.<br />

Biomarker measured: MSA (10 mg/kg)-provoked<br />

urine lead<br />

Analysis: GFAAS<br />

Units: µg/24 hr<br />

Arithmetic mean (range): 94 (37-171)<br />

Units: µg/4 hr<br />

Arithmetic mean (SD, range)<br />

<strong>Lead</strong> workers: 288.7 (167.7, 32.4-789)<br />

Reference: 23.7 (11.5, 10.5-43.5)<br />

Units: µg/4 hr<br />

Arithmetic mean (SD, range)<br />

186 (208, 4.8-2100)<br />

Arithmetic mean plasma concentration<br />

was 0.67 µg/dL (range 0.37-0.92).<br />

Plasma-to urine clearance estimate was<br />

22 L/day.<br />

Blood-to-urine clearance estimate was<br />

0.33 L/day (from Diamond, 1992).<br />

Arithmetic mean (SD, range) PbB<br />

concentration (µg/dL) was 44.6 (12.6,<br />

21.4-78.4) in lead workers and 5.9 (1.2,<br />

4.0-7.2) in reference subjects.<br />

PbB was strongest predictor or DMSAprovoked<br />

urine lead.<br />

Arithmetic mean (SD, range) PbB<br />

(µg/dL) was 32.0 (15, 4-86). PbB was<br />

strongest predictor or DMSA-provoked<br />

urine lead.<br />

Arithmetic mean (SD, range) tibia lead<br />

(µg/g, XRF) was 37.1 (40.4, -7 to 338).<br />

AAS - atomic absorption spectroscopy; PbB = blood lead; ET-AAS - electro-thermal atomic absorption spectrometry; GFAAS - graphite furnace atomic absorption<br />

spectroscopy; ICP-AES - inductively coupled plasma/atomic emission spectroscopy; ICP-MS - inductively coupled plasma-mass spectrometry; MS - mass spectrometry;<br />

NR - not reported; Pct - percentile; TEL -tetraethyl lead; TIMS - thermal ionization mass spectrometry.

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