Factors affecting lead and cadmium levels in house dust in industrial areas of eastern Germany

1999 ◽  
Vol 234 (1-3) ◽  
pp. 25-36 ◽  
Author(s):  
Ines Meyer ◽  
Joachim Heinrich ◽  
Ulrich Lippold
1999 ◽  
Vol 81 (1) ◽  
pp. 32-44 ◽  
Author(s):  
Ines Meyer ◽  
Joachim Heinrich ◽  
Ulrich Lippold

Author(s):  
HyeJeong Jo ◽  
GeunBae Kim ◽  
JunYoung Chang ◽  
Kwan Lee ◽  
ChulWoo Lee ◽  
...  

This study aimed to measure lead (Pb) and cadmium (Cd) exposure levels in residents living near a zinc (Zn) smelter in Seokpo-myeon, Bonghwa-gun, South Korea, and identify factors affecting exposure. Residents aged ≥20 years living within 3 km and ≥30 km away from the smelter were classified as the exposure group (n = 549), and the control group (n = 265), respectively. Data were obtained through a questionnaire survey. Blood Pb levels in the exposure group (4.19 µg/dL) were higher than in the control group (2.70 µg/dL). The exposure group (1.32 µg/L) also had higher urinary Cd concentrations than the control group (0.80 µg/L). Male sex, older age, previous work at the smelter, smoking, and proximity to the smelter were associated with higher blood Pb levels on multivariate analysis; urinary Cd concentration was significantly higher in women, those who were older, those with experience of working in a Zn smelter or mine, those with proximity to the Zn smelter, and those who consumed locally grown vegetables. In conclusion, Zn smelters are major source of Pb and Cd pollution and require ongoing public health management to prevent potential adverse health effects.


2021 ◽  
Vol 63 ◽  
pp. 126656
Author(s):  
Georg E. Matt ◽  
Penelope J.E. Quintana ◽  
Eunha Hoh ◽  
Nathan G. Dodder ◽  
E. Melinda Mahabee-Gittens ◽  
...  

2018 ◽  
Vol 28 (4) ◽  
pp. 129-137
Author(s):  
Marek Kurnatowski

Abstract The article describes the results of tests carried out to determine the measurable effect of vibrations on the accuracy of measurements with an automatic precise leveller. It contains specification of the research station created to examine the case and description of factors affecting the measurement results. The multi-frequency vibrations were forced on a leveller during measurements and calculated mean errors for each frequency analysed. The range of frequencies for which the measurement was possible was estimated. The obtained results can be helpful in the engineering measurements designing, especially in industrial areas, where vibrations are an inseparable element of the environment.


2019 ◽  
Vol 67 (9) ◽  
pp. 2670-2678 ◽  
Author(s):  
Benjamin W. Redan ◽  
Joseph E. Jablonski ◽  
Catherine Halverson ◽  
James Jaganathan ◽  
Md. Abdul Mabud ◽  
...  

2018 ◽  
Vol 15 (2) ◽  
pp. 197-208 ◽  
Author(s):  
Maha A. Alwaili ◽  
Heba Allah M. Elbaghdady ◽  
Ayman H. Zaki ◽  
Mohammed A. Sallam

Background: Nanotubes serve an important role in heavy metal ions for the removal from wastewater. The efficiency of these nanotubes is dependent on the nature of surface, pH, temperature setting and the hydrothermal contact time. Method: The current research sought to find out the efficiency of titanate nanotubes in the removal of Pb2+ and Cd2+ ions from wastewater. The research concentrated on mesoporosity, pH and hydrothermal contact time, as factors affecting the efficiency of titanate nanotubes in the removal of Pb2+ and Cd2+ ions. Titanate nanotubes were prepared at different hydrothermal conditions, the prepared nanotubes were used for efficient removal of Pb2+ and Cd2+. The following technologies were utilized in the research: (1). electron microscopy (FESEM), (2). X-ray diffraction (XRD), (3). highresolution transmission electron microscopy (HRTEM), (4). FTIR and BET surface area were measured by N2 adsorption using Micrometrics TriStar II. Results: The results obtained reveal that increasing the hydrothermal time improved the adsorption efficiency of the prepared material, where the Titanate nanotubes prepared at the longest time (23hr) achieved the highest removal efficiency for both Pb2+ and Cd2+ at pH 2 and pH 3, respectively. The nanotubes prepared at different conditions also showed significant activities, where the removal % exceeded 90 % for all samples at a pH range of 2 to 3. It was conducted that the factors that affected the efficiency could be set at optimum and the removal efficiency attained be increased, to more than 90%.


1994 ◽  
Vol 66 (4) ◽  
pp. 243-248 ◽  
Author(s):  
J. Begerow ◽  
I. Freier ◽  
M. Turfeld ◽  
U. Kr�mer ◽  
L. Dunemann

1996 ◽  
Vol 180 (2) ◽  
pp. 95-105 ◽  
Author(s):  
M TREPKA ◽  
J HEINRICH ◽  
C SCHULZ ◽  
C KRAUSE ◽  
M POPESCU ◽  
...  

2019 ◽  
Vol 15 (1) ◽  
pp. 33-37 ◽  
Author(s):  
Вера Молвинских ◽  
Vera Molvinskikh ◽  
Надежда Белоконова ◽  
Nadezhda Belokonova ◽  
Татьяна Еловикова ◽  
...  

The inhabitants of industrial areas are influenced by anthropogenic factors. Harmful chemicals enter the body from the air, drinking water, food and are found in the oral fluid, hard tooth tissues, dental deposits, biopsy of tissue structures and contribute to the development of caries and inflammatory periodontal diseases. Toothpastes and mouthwashes are used for prevention of major dental diseases. The toothpastes contain a variety of abrasives: silicon dioxide, calcium carbonate, titanium dioxide, calcium bicarbonate, hydroxyapatite, which can act as adsorbents of heavy metal compounds. Biomonitoring using inductively coupled plasma mass spectrometry (ICP-MS) allows to determine the micro-quantities of metals in blood, urine, human milk, hair and oral fluid. The study of oral hygiene products showed that toothpastes and mouthwashes, used by patients for prevention and treatment of inflammatory periodontal diseases, have an adsorption activity for metal ions. The article evaluates the adsorption efficiency of medical and preventive toothpaste relative to the metal ions (chromium, manganese, cadmium, lead, etc.) in the oral fluid of the inhabitants of industrial areas. The use of adsorption-effective toothpaste twice a day for two weeks showed a significant decrease in the concentration of metal ions in the mixed saliva of the inhabitants which are under the influence of unfavorable environmental factors. When using a toothpaste containing silicon and titanium oxides, the concentration of manganese, chromium, arsenic, lead and cadmium ions in the oral fluid decreases within 2 weeks. The modern method of ISP-MS is advisable to use for high-precision monitoring of the oral fluid ion composition in patients living in the industrial areas.


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