Determination of heavy metals on filter material by solid sampling direct Zeeman AAS

Schothorst, R.C.; Géron, H. M. A.; Spitsbergen, D.; Herber, Robert

doi:10.1007/bf00554016

Cited by 4 publications

(2 citation statements)

References 8 publications

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“…31 One method frequently reported for improving the homogen-ETAAS is carried out, the non-homogeneity of the subsamples used is the principal cause of the poor precision of the eity of the subsamples is the reduction of particle size. 17,33,34 In this way, according to Visman's theory,35 the effects due to technique. Other effects, such as imprecision in the weighing, atomization under non-optimum conditions or possible the segregation which may exist in the sample can be avoided and the only effect to consider is what Visman terms the changes in the deposition of the samples in the atomizer or in the atomization mechanisms, are hardly significant, although 'random variance component', although this worker pointed out that this contribution is the most important for samples they are probably of greater importance with samples whose matrix is not largely removed in the pyrolysis step.…”

Section: Procedures For the Measurements In Solid Samplesmentioning

confidence: 99%

Discrimination of the causes of imprecision in the direct determination of metals in organic solid samples by electrothermal atomization atomic absorption spectrometry

Belarra¹,

Resano²,

Castillo³

1998

J. Anal. At. Spectrom.

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Section: Procedures For the Measurements In Solid Samplesmentioning

confidence: 99%

Discrimination of the causes of imprecision in the direct determination of metals in organic solid samples by electrothermal atomization atomic absorption spectrometry

Belarra¹,

Resano²,

Castillo³

1998

J. Anal. At. Spectrom.

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“…For the determination of Cd and Pb in airborne Reagents particulates direct insertion of the filter-paper into the graphite furnace has been proposed. 4,6,[8][9][10] This method suffers from All chemicals used were of analytical-reagent grade. A multimatrix problems and poor precision.…”

mentioning

confidence: 99%

Determination of metals in atmospheric particulates by electrothermal atomic absorption spectrometry with organic slurry sample introduction

Terzieva¹,

Arpadjan²

1998

J. Anal. At. Spectrom.

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An inverse lead air to lead blood relation: the impact of air-stream helmets

Ulenbelt

Lumens

Géron

et al. 1991

Int. Arch Occup Environ Heath

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At a secondary smelter (24 smelting workers, 13 refinery workers), data on exposure to lead were collected by systematic observation of hygienic behaviour, a questionnaire, personal sampling of lead dust in ambient air (PbA) and determination of lead in the blood level (PbB). The smelting workers showed a negative relation between PbA and PbB. The 53% variance in PbB levels in the smelting workers can be explained by the combination of PbA, the percentage of time an air-stream helmet is worn, the frequency of cigarette smoking at the workplace and the amount of spitting. Air-stream helmets and spitting contribute to a lower PbB, whereas smoking contributes to a higher PbB. Moreover, expected PbB levels were computed by using several regression equations for the relation between PbA and PbB, as suggested in the Final OSHA Standard for Occupational Exposure to Lead (OSHA 1978). As the percentage of time an air-stream helmet is worn increases, the deviation from the expected PbB falls substantially. The refinery workers showed the expected weak positive correlation coefficient between PbA and PbB. No direct relation between the PbB level and the observed hygienic behaviour could be established. However, there was a positive relation between the level of education and the level of PbB. Moreover, the level of education was related to the frequency of eating at the workplace and negative as far as the percentage of time gloves are worn is concerned. Our conclusion is that hygienic behaviour is a major factor that modifies the relation between PbA and PbB in groups of workers.(ABSTRACT TRUNCATED AT 250 WORDS)

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Determination of heavy metals on filter material by solid sampling direct Zeeman AAS

Cited by 4 publications

References 8 publications

Discrimination of the causes of imprecision in the direct determination of metals in organic solid samples by electrothermal atomization atomic absorption spectrometry

Discrimination of the causes of imprecision in the direct determination of metals in organic solid samples by electrothermal atomization atomic absorption spectrometry

Determination of metals in atmospheric particulates by electrothermal atomic absorption spectrometry with organic slurry sample introduction

An inverse lead air to lead blood relation: the impact of air-stream helmets

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