Optimization of cloud point extraction and solid phase extraction methods for speciation of arsenic in natural water using multivariate technique

Inorganic Arsenic Speciation in Groundwater Samples Using Electrothermal Atomic Spectrometry Following Selective Separation and Cloud Point Extraction

“…The speciation of As in groundwater samples used for domestic and agriculture purposes was carried out by separation/preconcentration methods. The activated alumina in acidic form has a high affinity for a range of oxoanions like As; 5,19,22,25,26 hence, both As species: AsO3 2-and AsO4 2-, could be retained and preconcentrated on alumina column through selecting the suitable pH. The small particles of Al2O3 are an amphoteric oxide with an isoelectric point (IEP) of 8.1.…”

“…The average content of TAs was found to be 43.5 μg L -1 in groundwater samples of our area, higher than the permissible limit of WHO but less than other countries as reported elsewhere. 1,[3][4][5][6] This is due to the natural processes and anthropogenic activities i.e., pesticides and insecticides used for agricultural lands, untreated waste water sewage sludge as agricultural fertilizer and synthetic fertilizers. 3,24,30,32,33 The obtained results showed some significant differences among the concentration of organic and inorganic species of As in two sampling locations of groundwater ( Table 2).…”

“…1 As exists in water primarily as the inorganic oxyanions of arsenite As III and arsenate As V , with As III predominating in anaerobic waters and As V prevailing in oxic waters. [2][3][4][5] Recent surveys about arsenic redox speciation in groundwater, which is a major source of drinking water throughout the world, 6 suggest that inorganic As can represent >67% of total As in groundwater. 7 Therefore, the trace determination of inorganic As species in surface and groundwater is important, because of their high toxicity and ability to bioaccumulate in many organisms and its abundance in all environmental compartments.…”

Evaluation of Toxic Risk Assessment of Arsenic in Male Subjects Through Drinking Water in Southern Sindh Pakistan

“…About 100 million people in the world, including about 13 million in the USA, are chronically exposed to As [3]. Arsenic contamination of drinking water has become a major health concern, and adverse health effects reported in different regions throughout the world might be due to the consumption of drinking water containing high contents of As [4][5][6][7][8][9][10][11][12][13][14][15]. Inorganic As [arsenate (As 5+ ) and arsenite (As 3+ )] are considered to be the major form of As in groundwater and surface water as well as other environmental and biological sectors [16].…”

Amberlite IR-120 Modified with 8-Hydroxyquinoline as Efficient Adsorbent for Solid-Phase Extraction and Flame Atomic Absorption Determination of Trace Amounts of Some Metal Ions

“…Solid-phase extraction (SPE) with unique and distinguished advantages, low disposal costs, rapid phase separation, and the ability of combination with different detection techniques in the form of online or offline mode widely has been applied for the trace metal ion enrichment [7][8][9][10][11][12][13][14][15][16]. Various solid-phase extraction materials including Sepabeads SP70 [17], Diaion HP-2MG [18], cellulose [19], activated carbon [3,20], Lewatit S 100 [21], polyurethane foam [22], Chelex 100 [23], microcrystalline naphthalene [24], Amberlite XAD-2000 [25], sodium dodecyl sulfatecoated alumina [26], and Amberlite XAD-16 resin [27] have been used.…”