scholarly journals Effects of water conditions on the enrichment of heavy metals in wetland soils by Artemisia selengensis

2019 ◽  
Vol 31 (6) ◽  
pp. 1592-1600
Author(s):  
ZHANG Ping ◽  
◽  
ZENG Xianzhe ◽  
WANG Qinyuan ◽  
WANG Wei ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Wetland Soils ◽  
Water Conditions

scholarly journals Sorption behavior of heavy metals on poorly crystalline manganese oxides: roles of water conditions and light

2014 ◽  
Vol 16 (6) ◽  
pp. 1519-1525 ◽  
Author(s):  
Eun-Ju Kim ◽  
Jungwon Kim ◽  
Sung-Chan Choi ◽  
Yoon-Seok Chang
Keyword(s):  
Heavy Metals ◽  
Manganese Oxides ◽  
Sorption Behavior ◽  
Water Conditions ◽  
Uptake And Release

This study investigated Cu(ii) uptake and release in a poorly crystalline δ-MnO2 system based on mechanisms of aggregation and photoinduced dissolution.

scholarly journals Use of national-scale data to examine human-mediated additions of heavy metals to wetland soils of the US

2019 ◽  
Vol 191 (S1) ◽  
Author(s):  
Amanda M. Nahlik ◽  
Karen A. Blocksom ◽  
Alan T. Herlihy ◽  
Mary E. Kentula ◽  
Teresa K. Magee ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Wetland Soils ◽  
National Scale ◽  
The Us ◽  
Scale Data

Speciation and Spatial Distribution of Heavy Metals (cu and Zn) in Wetland Soils of Poyang Lake (China) in Wet Seasons

Wetlands ◽  
2017 ◽  
Vol 39 (S1) ◽  
pp. 89-98 ◽  
Author(s):  
Maolan Wang ◽  
Ketu Hu ◽  
Dingling Zhang ◽  
Jinhu Lai
Keyword(s):  
Heavy Metals ◽  
Spatial Distribution ◽  
Poyang Lake ◽  
Wetland Soils ◽  
Cu And Zn

scholarly journals Bacteriological, Chemical and Soil Enzyme Activity Profile of Coastal Wetland Soils Exposed to Crude Oil Exploration in Akwa Ibom State, Nigeria

2021 ◽  
pp. 1-11
Author(s):  
Ofonime U. M. John ◽  
Samuel I. Eduok ◽  
Victor O. Nwaugo ◽  
Reginald A. Onyeagba
Keyword(s):  
Heavy Metals ◽  
Crude Oil ◽  
Dehydrogenase Activity ◽  
Petroleum Hydrocarbon ◽  
Coastal Wetland ◽  
Nitrifying Bacteria ◽  
Wetland Soils ◽  
Oil Exploration ◽  
Dry Seasons ◽  
Wet And Dry Seasons

Coastal wetland soils exposed to crude oil exploration activities were assessed using microbiological and chemical procedures in the wet and dry seasons. The bacteria isolated from the impacted wetland soils included species of the genera Acinetobacter, Alcaligenes, Citrobacter, Azotobacter, Bacillus, Cellulomonas, Flavobacterium, Micrococcus, Proteus, Pseudomonas, Sarcina, Serratia and Staphylococcus. In addition, species of the genera Nitrobacter, Nitrosomonas and Rhizobium were isolated from the non-impacted soils. Total heterotrophic bacterial counts (THBC) in the wet and dry seasons ranged from 7.1 ± 0.4 to 8.6 ± 0.2 Log₁₀CFU g‾¹ and 3.7± 0.04 to 5.4 ± 0.1 Log₁₀CFU g‾¹ for the control and impacted soils respectively. The counts in control was 1.6 to 1.9 times higher than the impacted soil and the difference was significant at p = 0.05. The nitrifying bacteria (NB) associated with the impacted soil were the most adversely affected. There was 2.11 to 139 times higher concentration of the different heavy metals in the impacted soil than the control and 1.13 to 1.26 x 104 times higher Total petroleum hydrocarbon in the impacted soils in both seasons and these differences were significant (p = 0.05). Dehydrogenase activity was 2.8 to 3.1 times higher in the control soils compared to the impacted soil whereas Phenol oxidase was 15.14 to 15.75 times higher in the impacted soils in both seasons. This study indicates that Exploration and Production activitiesi in the coastal wetlands if not carried out according to specified guidelines by the environmental control agencies can result in the reduction of beneficial soil bacterial population and diversity, high concentrations of heavy metals, petroleum hydrocarbon and decreased dehydrogenase activity at impacted explored wetland site. It also revealed non-impacted regions of this explored wetlands not within oil pipe-line routes are fit for agricultural use.

Application of amalgam electrodes in studies of heavy metals under natural water conditions

1987 ◽  
Vol 200 ◽  
pp. 191-211 ◽  
Author(s):  
J.-P. Bernhard ◽  
J. Buffle ◽  
N. Parthasarthy
Keyword(s):  
Heavy Metals ◽  
Natural Water ◽  
Water Conditions

scholarly journals Heavy metals in wetland soils along a wetland-forming chronosequence in the Yellow River Delta of China: Levels, sources and toxic risks

2016 ◽  
Vol 69 ◽  
pp. 331-339 ◽  
Author(s):  
Guangliang Zhang ◽  
Junhong Bai ◽  
Qingqing Zhao ◽  
Qiongqiong Lu ◽  
Jia Jia ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Yellow River ◽  
Yellow River Delta ◽  
River Delta ◽  
The Yellow River ◽  
Wetland Soils ◽  
The Yellow River Delta

scholarly journals Analysis of Seawater Pollution Index Based on Cu and Pb Parameter in Tourism Area of Raja Ampat West Papua

2018 ◽  
pp. 113
Author(s):  
Muhammad Taufiq Thahir ◽  
Yusnita Lagoa
Keyword(s):  
Heavy Metals ◽  
Atomic Absorption ◽  
Water Samples ◽  
Pollution Index ◽  
Quality Standard ◽  
Standard Data ◽  
West Papua ◽  
Water Conditions ◽  
Papua Barat ◽  
Pb Concentration

Research has been conducted on the analysis of seawater pollution index in the Raja Ampat tourism park of Papua Barat by using Cu and Pb concentration as parameters. The research aims to produce information on water conditions in Raja Ampat. Those information can ensure the sustainability of this area in the future. AAS (Atomic Absorption Spectrophotometer) instrument was used to perform water samples analysis. Samples taken from five locations, namely Sapokren, Saleo, Waiwo, Waisai Harbour and Waisai Fish Harbour, which were respectively marked with area I, II, III, IV and V. For Cu parameter; area I was found, which was 0.62 mg/L which had exceeded the quality standard, while area II, III, IV, and V were not existed Cu. Furthermore for Pb; the concentration of heavy metals founded in four locations, area I, II, III and IV; 2,99 mg/L, 1,76 mg/L, 1,27 mg/L and 0,23 mg/L respectively. Other while area V was not found Pb concentration. All quality standard data were entered into the pollution index equation in accordance with the guidelines of KepmenLH No. 115 of 2003. The data showed that only one area was still in the good category, area V, the remaining area I, II, III and IV were included in the category of metal contaminated areas of Cu and Pb with varied levels of pollution beginning at low, middle to high.

Spatial and Seasonal Variations of Heavy Metals in Wetland Soils of the Tidal Flats in the Yangtze Estuary, China: Environmental Implications

Pedosphere ◽  
2013 ◽  
Vol 23 (4) ◽  
pp. 511-522 ◽  
Author(s):  
Xue-Feng HU ◽  
Yan DU ◽  
Jian-Wei FENG ◽  
Sheng-Qiong FANG ◽  
Xiao-Jiang GAO ◽  
...  
Keyword(s):  
Heavy Metals ◽  
Seasonal Variations ◽  
Yangtze Estuary ◽  
Tidal Flats ◽  
Wetland Soils ◽  
Environmental Implications ◽  
The Yangtze Estuary
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