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Arsenic: safe levels in food | NZ Government

What is arsenic? Arsenic is a chemical found naturally in soils, rocks, and water. There are 2 types: organic arsenic, which is found in fish and shellfish; inorganic arsenic, which is found in minerals, rocks, and mine tailings. Both types can be toxic at high levels. But inorganic arsenic is much more toxic. Environments with higher arsenic ...

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ProMinent New Zealand's Post

Numerous Councils have been grappling with spikes in arsenic levels found in their drinking water systems. In our… ProMinent New Zealand on LinkedIn: #arsenic #watertreatment #headlines #ozone # ...

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No cause for concern after slightly elevated levels of arsenic …

There is no immediate risk to public health. The 'maximum acceptable value' for arsenic in New Zealand drinking water is 0.01milligrams per litre. Watercare reported a result …

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Arsenic: safe levels in food | NZ Government

Results show that arsenic levels are low in New Zealand. The New Zealand Total Diet Study The Food Standards Code sets maximum limits for inorganic arsenic in foods.

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(PDF) Arsenic in the New Zealand environment

Arsenic in the New Zealand environment. Nanthi Bolan. 2004. See Full PDF Download PDF. See Full PDF Download PDF. Related Papers. Arsenic accumulation by aquatic and terrestrial plants.

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Phytostabilization of Gold Mine Tailings from New Zealand. Part 2

Leachates and uptakes were higher with an organic fertilizer amendment than Superphosphate, particularly in combination with barley, and the amount of As leached was proportional to the amounts of P added. Revegetation of mine tailings usually requires amendments of phosphorus. However, phosphate addition can mobilize arsenic (As) from the …

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Arsenic cycling in the Earth's crust and hydrosphere: interaction

Field-based research on naturally occurring arsenic contamination of surface waters and groundwaters and the mechanisms of contamination are reviewed. The distribution of arsenic is strongly related to areas of active plate tectonics, magmatism and associated hydrothermal activity, and high rates of erosion. Sources of arsenic contamination are mainly hydrothermal …

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Explained: What you need to know about arsenic and drinking water

Slightly elevated levels of the toxic heavy metal arsenic have been detected in treated water sourced from the Waikato River.Science and environmental reporter Jamie Morton explains what it is ...

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Arsenic | Toxicological Profile | ATSDR

The ATSDR toxicological profile succinctly characterizes the toxicologic and adverse health effects information for the hazardous substance described here. Each peer-reviewed profile identifies and reviews the key literature that describes a hazardous substance's toxicologic properties. Other pertinent literature is also presented, but is described in less detail than the …

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Phytostabilization of gold mine tailings from New Zealand. Part 2

Revegetation of mine tailings usually requires amendments of phosphorus. However, phosphate addition can mobilize arsenic (As) from the tailings. A 5-mo lysimeter field trial was conducted to quantify As mobilization in gold mine tailings, in association …

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Inferring arsenic anomalies indirectly using airborne hyperspectral

Well-exposed mineral deposits are scarce at a global level and presently potential mineral-rich sites are underlying vegetation cover and topsoil, which are suboptimal for direct remote sensing based exploration techniques. This study aims to implement an indirect approach to arsenic (As) distribution mapping using the surface manifestations of the subsurface geology and link it to …

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Arsenic cycling in the Earth's crust and hydrosphere: interaction

We focused on better characterizing the arsenic resistance genes given that arsenic is a non-essential metalloid, nearly ubiquitous in soil (Masuda, 2018; Reimann et al., 2009), toxic to humans ...

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Elevated levels of arsenic detected in Waikato River affect …

With concerns about higher-than-normal arsenic levels in samples of Auckland and Waikato's treated water, the government water regulator will announce the most recent test results this afternoon.

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Arsenic in the New Zealand environment

In New Zealand, elevated levels of arsenic in soils and waters occur as a result of geothermal activity, exacerbated by geothermal power exploitation, and the past and present use of...

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Arsenic in Groundwater of the Waikato Region

Arsenic is a toxic but naturally occurring chemical element, present at low levels in all soil, water, plants, animals, and foods. For members of the general population, most exposure to arsenic is through the small amounts of this element that are naturally present in food and drinking water. ... In New Zealand, the tolerated maximum ...

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Evidence for a seasonal fluctuation of arsenic in New Zealand's …

DOI: 10.1016/0269-7491(94)00092-R Corpus ID: 25955759; Evidence for a seasonal fluctuation of arsenic in New Zealand's longest river and the effect of treatment on concentrations in drinking water.

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Evidence for a seasonal fluctuation of arsenic in New Zealand's …

A year-long survey, with samples collected weekly, was conducted to estimate long-term average concentrations of arsenic in treated and untreated drinking water for the city of Hamilton, New Zealand. The average concentration of arsenic in Waikato River water at Hamilton before processing was found to be (32·1 ± 3·7) μg litre −1, about ...

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Bacterial S-layer preservation and rare arsenic-antimony-sulphide

Surveys of Champagne Pool, one of New Zealand's largest terrestrial hot springs and rich in arsenic ions and compounds, have been restricted to geological and geochemical descriptions, and a few ...

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SunLive

Elevated levels of arsenic have been detected in treated water from the Waikato River, affecting water supplies in Auckland and Waikato.. The Government was briefed on Wednesday evening and sought ...

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Arsenic speciation of geothermal waters in New Zealand

Total arsenic and four arsenic species; arsenite (iAs(III)), arsenate (iAs(V)), dimethylarsinic acid (DMA(V)) and monomethylarsonic acid (MA(V)), are reported in 28 geothermal features from the Taupo Volcanic Zone (TVZ) and Waikato region of New Zealand. Samples were collected for arsenic speciation …

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Clinician Brief: Arsenic | Environmental Health and Medicine …

This is due to rice's ability to take up arsenic from soil and water. Rice is also typically grown under flooded conditions, which increases the potential for arsenic uptake [FDA 2020]. Other plant species take up comparatively low levels of arsenic, even when grown in highly polluted soil or soil naturally high in arsenic. ...

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Arsenic | Taumata Arowai

Arsenic is a substance that can be found naturally in rock formations across Aotearoa New Zealand. It's most common in volcanic areas. It's also found naturally in the wider …

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Isolation and characterization of arsenate-reducing bacteria from

Two environmental sites in New Zealand were sampled (e.g., water and sediment) for bacterial isolates that could use either arsenite as an electron donor or arsenate as an electron acceptor under aerobic and anaerobic growth conditions, respectively. ... Isolation and characterization of arsenate-reducing bacteria from arsenic-contaminated ...

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Water supply update

Auckland's tap water fully complies with drinking water standards for New Zealand and remains safe to drink. Auckland's water supply continues to meet drinking water standards Our latest result (06/12/24) of 0.0034mg/l is well below the 'maximum acceptable value' of 0.01mg/l for arsenic in New Zealand drinking water.

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Two more water suppliers in the Waikato Region detect slightly …

New Zealand Food Safety's deputy director general Vincent Arbuckle says, "The levels detected are not harmful to animals and there is no evidence water used for animals or food production is unsafe. ... The maximum acceptable standard for arsenic in New Zealand drinking water is 0.01milligrams per litre. Water Services Manager Karl ...

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Two more councils report elevated levels of arsenic in water supply

Today's results in Waipā recorded 0.0138 and 0.0145mg/litre from two treatment plants. The maximum acceptable standard of arsenic for drinking water in New Zealand was 0.01mg/litre. Despite this, Water Services manager Karl Pavlovich said tap water remained safe for drinking, bathing, cleaning, and cooking, and residents did not need to boil it.

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Explained: What you need to know about arsenic and …

Arsenic is a naturally occurring chemical that can cause health risks with long-term exposure. Two suppliers who source treated drinking water from the Waikato River have reported testing results...

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Arsenic toxicity: sources, pathophysiology and mechanism

Bowen's disease, basal cell carcinoma, and squamous cell carcinoma are the most common arsenic-induced skin cancers. Bowen's disease is a precancerous skin carcinoma in situ that has been well documented as a result of arsenical exposure. Clinically, Arsenic-induced Bowen's Disease (BD) can be distinguished from non-arsenical Bowen's ...

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Microbial contributions to coupled arsenic and sulfur cycling in the

Field site. The Taup o Volcanic Zone (TVZ) consists of a complex group of high temperature geothermal systems in the central North Island of New Zealand. One of the major geothermal fields in the TVZ is Waiotapu, which is characterized by a large number of springs with elevated arsenic concentrations (Hedenquist and Henley, 1985; Mountain et al., 2003).

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Inorganic arsenic in rice and rice products in New Zealand and

A total of 200 rice and rice products from New Zealand and Australia were purchased from retail outlets during 2017 for inorganic arsenic analysis by ICP-MS. The survey of foods placed a particular emphasis on products marketed specifically for infants and young. A total of 159 samples (80%) gave po …

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