Arsenic removal from water/wastewater using adsorbents—A critical review

Thermally stable hybrid polyarylidene(azomethine-ether)s polymers (PAAP): an ultrasensitive arsenic(III) sensor approach

“…Electrochemical sensing of toxic As molecules represents a promising approach that can be used to complement already existing techniques owing to collective features such as low cost, easy instrumentation, high selective and sensitive, and significant for miniaturization [46]. Arsenic is a toxic substance, which caused various cancers and other serious diseases after long-term exposure [47]. Generally, As contamination in drinking water and groundwater is becoming a threat to global health, and as many as 140 million people worldwide may have been exposed to drinking water with As contamination levels higher than the World Health Organization’s guideline of 10 ppb [48].…”

“…As(III) is one of the most harmful substances in water to human health, and its toxicity is at least as 60 times as of As(V) or organic arsenic compounds [49]. Very recently, different analytical techniques for the detection of As(III) at the trace level have been developed, such as high performance liquid chromatography (HPLC), atomic fluorescence spectrometry (AFS), inductively coupled plasma-mass spectrometry (ICP-MS)  [47, 50]  etc. Although these analytic methods might be achieved low detection limits, but still they have some limitations such as expenses, time consuming and high skill requirements for operation.…”

Removal of arsenate from water by using an Fe–Ce oxide adsorbent: Effects of coexistent fluoride and phosphate

“…The occurrence of arsenic (As) in groundwater has become a major health issue, and adsorption techniques have been mainly used for its removal because of their low cost and high efficiency [1,2]. However, in some cases, As in groundwater co-exists with fluoride (F) or phosphate (P), which are believed to compete with As for adsorption sites on As adsorbents [3][4][5].…”

Arsenic accumulation by the aquatic fern Azolla: Comparison of arsenate uptake, speciation and efflux by A. caroliniana and A. filiculoides

“…In particular, As contamination in groundwater has become a crucial environmental and health problem in some parts of the world, especially in Bangladesh, Vietnam, India and China (Berg et al, 2001;Smith et al, 2000;Milton et al, 2005). The WHO guideline for As in drinking water has been changed from 50 to 10 mg/L (Smith et al, 2002;Mohan and Charles, 2007). However, millions of people in the developing countries are at risk of having drinking water with As concentration above the guideline.…”