Lead content in roadside vegetation as indicators of atmospheric pollution

The evidence that cigarette smoking and atmospheric pcllution are causes of lung cancer is largely statistical. The first evidence was indirect; that is, i1. was noticed that in many countries the incidence of lung cancer had increased and that the increase could be correlated with changes in the prevalence of cigarette smoking and of certain types of atmospheric pollution.Since then much direct evidence has been obtained. The relationship between cigarette smoking and lung cancer has been demonstrated retrospectively by comparing the smoking habits of patients with and without lung cancer and prospectively by observing the mortality from lung cancer in groups of persons of known smoking habits. Conclusions can be drawn from these studies only after careful examination of the results. In particular it is important in retrospective studies to test a) the reproducibility of the data, b) the representativeness of the data, and c) the comparability of the special series and their controls. The resul1.s of retrospective studies are all similar and all show a close relationship between cigarette smoking and the disease.The results have been confirmed by pro~pective studies which are lesF. open to bias. The results can be explained if cigarette smoking causes lung cancer or if both are related to some third common factor. Ancillary data (pathological changes in the bronchial mucosa, animal experiments, etc.) support the causal hypothesis.The evidence relating to atmospheric pollution is less definite and it is difficult to get direct evidence of a relationship in the individual. It is clear that pollution has little effect in the absence of smoking, but the mortality associated with a given amount of smoking is generally greater in large towns than in the countryside and among men who have emigrated from Britain than among men who have lived all their lives in less polluted countries.

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Multifrequency lidar sounding of atmospheric pollution by respirable particulated matter with separation into respirable fractions

Оптика атмосферы и океана ◽

10.15372/aoo20160109 ◽

2016 ◽

Vol 29 (1) ◽

Keyword(s):

Atmospheric Pollution ◽

Lidar Sounding

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Forms of Lead in Profiles of Differently Use Soil

Soil Annual Science ◽

10.2478/v10239-012-0040-1 ◽

2012 ◽

Vol 63 (4) ◽

pp. 41-45 ◽

Cited By ~ 2

Author(s):

Iwona Makuch

Keyword(s):

Organic Matter ◽

Lead Content ◽

Soil Profiles ◽

Allotment Gardens ◽

Arable Field ◽

Fraction I ◽

The Town ◽

House Gardens ◽

Humus Horizons

Abstract In order to determine the influence of intensive horticulture on the amount of lead and its fraction contents, there were selected soil profiles from following objects to be researched: house gardens and allotment gardens from town areas and arable field on the outskirts of the town. It has not been determined that there is any influence of manner usage on total lead content as well as its distribution in soil profiles. The fractionation composition has created the following series: fraction IV > fraction III > fraction II > fraction I. The manner of usage has influenced the content and distribution the III fraction of lead connected with organic matter. Humus horizons of garden soils is characterized as the highest in its content.

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EVALUATION OF ATMOSPHERIC POLLUTION BY USING NATURAL LOW-COST SORBENTS

Environmental Engineering and Management Journal ◽

10.30638/eemj.2012.023 ◽

2012 ◽

Vol 11 (1) ◽

pp. 177-184

Author(s):

Laura Bulgariu ◽

Iulian-Ovidiu Sandu ◽

Matei Macoveanu

Keyword(s):

Atmospheric Pollution ◽

Low Cost

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ATMOSPHERIC POLLUTION EVALUATION IN BRASOV ROMANIA BASED ON TURBIDITY FACTOR ANALYSIS

Environmental Engineering and Management Journal ◽

10.30638/eemj.2011.037 ◽

2011 ◽

Vol 10 (2) ◽

pp. 251-256 ◽

Cited By ~ 4

Author(s):

Maria-Monica Vatasescu ◽

Dorin Diaconescu ◽

Anca Duta ◽

Bogdan Gabriel Burduhos

Keyword(s):

Factor Analysis ◽

Atmospheric Pollution ◽

Pollution Evaluation

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MUELLER ALLOY 3140

Alloy Digest ◽

10.31399/asm.ad.cu0451 ◽

1983 ◽

Vol 32 (1) ◽

Keyword(s):

Corrosion Resistance ◽

Physical Properties ◽

Tensile Properties ◽

Copper Alloy ◽

Heat Treating ◽

Lead Content ◽

Atmospheric Conditions ◽

Excellent Corrosion Resistance ◽

High Copper ◽

Screw Machine

Abstract MUELLER Alloy 3140 is a high-copper alloy with moderate strength, a rich bronze color and excellent corrosion resistance. Its lead content gives it excellent machinability which makes it suitable for screw-machine applications. Its uses include many screw-machine products, decorative hardware, pickling crates and parts to resist severe atmospheric conditions. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Cu-451. Producer or source: Mueller Brass Company.

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