Hydrochemical characteristics of pressurized brine in Mahai potash area in Qinghai province

2015 ◽  
pp. 27-32
Keyword(s):  
Hydrochemical Characteristics ◽  
Qinghai Province

Hydrochemical Characteristics of Water of Balaklava Bay and Adjacent Coastal Part of the Black Sea

2000 ◽  
Vol 36 (6) ◽  
pp. 15
Author(s):  
Ye. A. Kuftarkova ◽  
N. P. Kovrigina ◽  
N. Yu. Rodionova
Keyword(s):  
Black Sea ◽  
The Black Sea ◽  
Hydrochemical Characteristics

Hydrochemical characteristics of surface water in main rivers of the irrigation districts in the downstream of Yellow River

2013 ◽  
Vol 21 (4) ◽  
pp. 487 ◽  
Author(s):  
Fang ZHANG ◽  
Fa-Dong LI ◽  
Jing LI ◽  
Shuai SONG ◽  
Wen-Jing CAI ◽  
...  
Keyword(s):  
Surface Water ◽  
Yellow River ◽  
Hydrochemical Characteristics ◽  
Irrigation Districts

Sustainable Development Capability in the Huangshui River Basin in Qinghai Province Based on Analyzing the Ecological Footprint

2010 ◽  
Vol 26 (3) ◽  
pp. 326-332
Author(s):  
Chuan-chuan ZHAO ◽  
Xiao-yang YANG ◽  
Feng-chen ZHANG ◽  
Xing-zhong YANG ◽  
Xu DONG ◽  
...  
Keyword(s):  
Sustainable Development ◽  
River Basin ◽  
Ecological Footprint ◽  
Qinghai Province ◽  
Development Capability

scholarly journals The hydrochemical characteristics and quality assessment of groundwater in Shuangliao City, China

2019 ◽  
Vol 98 ◽  
pp. 01034 ◽  
Author(s):  
Mingjun Liu ◽  
Changlai Xiao ◽  
Xiujuan Liang
Keyword(s):  
Groundwater Quality ◽  
Human Activities ◽  
Evaluation Method ◽  
Comprehensive Evaluation ◽  
Fuzzy Comprehensive Evaluation ◽  
Hydrochemical Characteristics ◽  
Analytic Hierarchy ◽  
Liaohe River ◽  
Geological Conditions ◽  
Type Water

In this study, a hydrochemical investigation was conducted in Shuangliao city to identify the hydrochemical characteristics and the quality of groundwater using descriptive statistics and correlation matrices. And on that basis, combined with Analytic hierarchy process (AHP), an improved two-level fuzzy comprehensive evaluation method is used to evaluate the groundwater quality. The results indicate that the major cations and anions in groundwater are Ca2+ and HCO3-, respectively. The chemical types are mainly HCO3—Ca type water, some areas are complicated due to the influence of human activities. The evaluation results show that the water quality in the area is mostly III type water, and the groundwater quality in some areas is IV or V water due to the influence of primary geological conditions or human activities. The groundwater quality in the East Liaohe River Valley and Shuangliao urban area is relatively poor, and in the northwest part which is the saline alkali soil area is also relatively poor.

scholarly journals Water-Soluble Ions in Atmospheric Aerosol Measured in a Semi-Arid and Chemical-Industrialized City, Northwest China

Atmosphere ◽  
2021 ◽  
Vol 12 (4) ◽  
pp. 456
Author(s):  
Huimin Jiang ◽  
Zhongqin Li ◽  
Feiteng Wang ◽  
Xi Zhou ◽  
Fanglong Wang ◽  
...  
Keyword(s):  
Sulfur Oxidation ◽  
Northwest China ◽  
Water Soluble ◽  
Heterogeneous Reactions ◽  
Anthropogenic Source ◽  
Heating Period ◽  
Qinghai Province ◽  
Soluble Ions ◽  
Water Soluble Ions ◽  
Semi Arid

We investigated water-soluble ions (WSIs) of aerosol samples collected from 2016 to 2017 in Lanzhou, a typical semi-arid and chemical-industrialized city in Northwest China. WSIs concentration was higher in the heating period (35.68 ± 19.17 μg/m3) and lower in the non-heating period (12.45 ± 4.21 μg/m3). NO3−, SO42−, NH4+ and Ca2+ were dominant WSIs. The concentration of SO42− has decreased in recent years, while the NO3− level was increasing. WSIs concentration was affected by meteorological factors. The sulfur oxidation and nitrogen oxidation ratios (SOR and NOR) exceeded 0.1, inferring the vital contribution of secondary transformation. Meanwhile higher O3 concentration and temperature promoted the homogeneous reaction of SO2. Lower temperature and high relative humidity (RH) were more suitable for heterogeneous reactions of NO2. Three-phase cluster analysis illustrated that the anthropogenic source ions and natural source ions were dominant WSIs during the heating and non-heating periods, respectively. The backward trajectory analysis and the potential source contribution function model indicated that Lanzhou was strongly influenced by the Hexi Corridor, northeastern Qinghai–Tibetan Plateau, northern Qinghai province, Inner Mongolia Plateau and its surrounding cities. This research will improve our understanding of the air quality and pollutant sources in the industrial environment.

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