Biomonitoring

Urinary concentrations of the alkoxyacetic acid metabolites are used for biomonitoring. See Table 11.6.

Table 11.5 Conversion factors for glycol ethers and their acetates at 20 °C and 1013 hPa (except those marked a for which 25 °C applies) (ECETOC, 1995)

Glycol ether

1 ppm equals (in mg/m3)

1 mg/m3 equals (in ppm)

EGME

3.11

0.322

EGMEA

4.90

0.2

MAA

1.74

0.58

EGEE

3.73

0.27

EGEEA

5.47

0.183

EGnPEa

4.25

0.24

EGnPEAa

5.98

0.17

EGiPE

4.25

0.24

EGBE

4.91

0.204

EGBEA

6.65

0.15

EGPhE

5.74

0.17

EGDMEa

3.74

0.267

EGDEEa

4.83

0.21

DEGME

4.99

0.20

DEGEE

5.57

0.179

DEGEEA

7.3

0.14

DEGBE

6.75

0.15

DEGBEA

8.48

0.12

DEGDME

5.57

0.18

DEGDEEa

6.64

0.15

TEGME

6.72

0.15

TEGEE

8.66

0.12

TEGBE

10

0.1

TEGDME

7.3

0.14

2PG1ME

3.75

0.267

2PG1MEA

5.4

0.185

2PG1EE

4.25

0.235

2PG1EEA

6.09

0.16

2PG1BE

5.49

0.182

2PG1PhE

6.33

0.158

1PG2ME

3.74

0.267

1PG2MEA

5.49

0.182

DPGME

6.2

0.016

DPGEE

4.25

0.235

TPGME

8.62

0.116

Table 11.6 Biological exposure indices (ACGIH, 2000)

Glycol ether

Determinant

Sampling time

BEI

EGEE

EAA

end of shift at end of working week

100 mg/g creatinine

EGEEA

EAA

end of shift at end of working week

100 mg/g creatinine

EGME

MAA

end of shift at end of working week

Non-quantitative. Biological monitoring should be considered, but a specific BEI could not be determined due to insufficient data.

EGMEA

MAA

end of shift at end of working week

Peripheral Neuropathy Natural Treatment Options

Peripheral Neuropathy Natural Treatment Options

This guide will help millions of people understand this condition so that they can take control of their lives and make informed decisions. The ebook covers information on a vast number of different types of neuropathy. In addition, it will be a useful resource for their families, caregivers, and health care providers.

Get My Free Ebook


Post a comment