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131.
Arabinda Das Anirban Biswas Debendra Nath Guha Mazumder 《Environmental geochemistry and health》2018,40(6):2359-2369
Skin lesion is one of the important health hazards caused by high intake of arsenic through drinking water and diet, and the other hazards include several types of cancers (viz. skin, lung and urinary bladder), ischemic heart disease, hypertension, etc. Two most important biomarkers to measure arsenic intake in a human body are arsenic concentration in urine and hair. The primary interest of this paper is the association between skin lesion and arsenic concentration in hair for participants with chronic arsenic exposure from West Bengal, India, using bivariate regression model based on copula function. The result showed participants with high arsenic concentration in hair had higher incidence of developing skin lesion. Arsenic concentration in hair was significantly higher for the participants with an arsenic concentration in water?>?10 mg/L. 相似文献
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Leaching of phosphorus from incinerated sewage sludge ash by means of acid
extraction followed by adsorption on orange waste gel 总被引:2,自引:1,他引:1
Ashes from sewage sludge incineration have a high phosphorus content, approximately 8% (W/W), which indicates a potential
resource of the limiting nutrient. Incineration of sewage sludge with subsequent recovery of phosphorus is a relatively new sludge
treatment technique. In this article, the leaching of phosphorus by using sulfuric acid as well as hydrochloric acid by means of several
batch experiments was presented. At the same time a selective recovery of phosphorus by adsorption was also discussed. The e ects
of acid concentration, temperature and time on extraction were studied. The phosphorus leaching increased with the increase in acid
concentration and temperature. Kinetic studies showed that the complete leaching of phosphorus took place in less than 4 h. Selective
adsorption of phosphorus by using orange waste gel provided a hint for recovery of this natural resource, which eventually could meet
the ever-increasing requirement for phosphorus. The overall results indicated that the incinerated sewage sludge ash can be treated with
acid to e ciently recover phosphorus and thus can be considered a potentially renewable source of phosphorus. 相似文献
136.
This study addresses the effect of political transition and subsequent timber bans on forest loss in Myanmar, in the context of identified drivers. Cook’s Distance (CD) was applied to remotely sensed time-series forest loss dataset to measure the effect of the events. Forest loss derived fragmentation metrics were linked to drivers at a landscape scale. Results show that at the national level, the political transition in 2011 had maximum effect (CD 0.935) on forest loss while the timber bans decreased forest loss by 612.04 km2 and 213.15 km2 in 2015 and 2017 (CD 0.146 and 0.035), respectively. The effect of the events varied for different States/Regions. The dominant drivers of change shifted from plantations in 2011 to infrastructure development in 2015. This study demonstrates the effects of policy on forest loss at various scales and can inform decision-makers for forest conservation, planning and development of mitigation measures. 相似文献
137.
Interaction of plastic particles with heavy metals and the resulting toxicological impacts: a review
Maity Sukhendu Biswas Chayan Banerjee Sambuddha Guchhait Rajkumar Adhikari Madhuchhanda Chatterjee Ankit Pramanick Kousik 《Environmental science and pollution research international》2021,28(43):60291-60307
Environmental Science and Pollution Research - Interactions of plastic particles with different organic/inorganic pollutants including heavy metals impact their ecotoxicological potential, and... 相似文献
138.
Begum BA Biswas SK Hopke PK 《Journal of the Air & Waste Management Association (1995)》2006,56(1):85-89
Vehicular air pollution is common in growing metropolitan areas throughout the world. Vehicular emissions of fine particles are particularly harmful because they occur near ground level, close to where people live and work. Two-stroke engines represented an important contribution to the motor vehicle emissions where they constitute approximately half of the total vehicle fleet in Dhaka city. Two-stroke engines have lower fuel efficiency than four-stroke engines, and they emit as much of an order of magnitude and more particulate matter (PM) than four-stroke engines of similar size. To eliminate their impact on air quality, the government of Bangladesh promulgated an order banning all two-stroke engines from the roads in Dhaka starting on December 31, 2002. The effect of the banning of two-stroke engines on airborne PM was studied at the Farm Gate air quality-monitoring station in Dhaka (capital of Bangladesh), a hot spot with very high-pollutant concentrations because of its proximity to major roadways. The samples were collected using a "Gent" stacked filter unit in two fractions of 0-2.2 microm and 2.2-10 microm sizes. Samples of fine and coarse fractions of airborne PM collected from 2000 to 2004 were studied. It has been found that the fine PM and black carbon concentrations decreased from the previous years because of the banning of two-stroke engine baby taxies. 相似文献