Levels of heavy metals in wastewater and soil samples from open drainage channels in Nairobi, Kenya: community health implication

Levels of Mercury (Hg), Lead (Pb), Cadmium (Cd), Chromium (Cr), Nickel (Ni) & Thallium (Tl) were established in wastewater & soil samples obtained from 8 sites in open drainage channels at Nairobi industrial area, Kenya.

Ultra-trace inductively coupled plasma mass spectroscopy (ICP-MS) was used for metal analysis.

Temperature, pH & turbidity of wastewater ranged from 16.75 to 26.05 °C; 7.28 to 8.78; 160.33 to 544.69 ppm respectively and within World Health Organization (WHO) allowable limits.

Wastewater conductivities in 4 sites ranged from 770 to 1074 µS/cm and above WHO limits at 25 °C.

The mean concentrations of the metals in wastewater ranged from 0.0001 to 0.015 ppm in an ascending order of Tl ​


Arsenic Pills and Lead Foundation: The History of Toxic Makeup

Women in the Roman Empire used lead makeup to whiten their faces, and in the 16th century, English nobles did pretty much the same thing.

One of the most famous figures to use lead makeup was Queen Elizabeth I, who used it to cover her smallpox scars.

This mixture of lead and vinegar that Elizabeth used was known as Venetian ceruse, or the spirits of Saturn. While it may have smoothed a woman’s complexion day-to-day, over time it caused skin discoloring, hair loss, and rotted teeth.

Arsenic was known to be poisonous during the Victorian era, but perhaps some women thought that a little bit wouldn’t hurt.

Although it can be tolerated in small amounts, taking it was still a serious risk—unless you really wanted that “deathly pallor” look


Arsenic in canada!

Emerging Arsenic Threat in Canada


Arsenic in south africa!

Arsenic and polymetallic contaminants in groundwater of the arid regions of South Africa


Dangerous Levels of Arsenic Found Near Tanzania Mine

The site of the May 2009 spill is a disaster area.

The most extreme water sample taken here contained about half of a lethal dose for a human of arsenic (8849µg/l). While not being used, the area is not fenced and represents a real danger to people and wildlife.

Key findings: North Mara Gold Mine (Barrick Gold) The mine is situated in the Mara-district east of Victoria Lake in North Tanzania.

The closest town is Tarime.

The environmental situation in North Mara is very worrying. For a while people have claimed that the tailing dam is leaking and so fear contamination of the area. Barrick has alleged that people have been stealing the lining of the tailing dam and destroying pipes. The area surrounding the tailing dam is not fenced. In May 2009 a major spill occurred at the mine. Samples were taken both the area of the spill and the tailing dam at various distances.



Researchers find arsenic in german beers!

The heavy metal enters the beer through the filtration process, researchers said.

They tested some 150 beer varieties and discovered that as much as 24 micrograms of arsenic pro litre is contained in German brews.


Arsenic pollution in France

According to health experts, the residents who are exposed to arsenic contamination in the Orbiel valley are now at a very high risk of cancer.

For the moment, authorities have simply reminded citizens of longstanding recommendations such as washing hands regularly and avoiding locally grown fruit or leafy vegetables.


5 States with High Levels of Arsenic in Groundwater

Arsenic is a chemical element that enters the environment from mineral deposits, industrial activity, pesticides and the smelting of metals.

In high levels, arsenic can cause toxicity, liver and kidney damage, and even cancer.

In 2001, the U.S. Environmental Protection Agency (EPA) set a maximum contaminant level of 10 ppb for arsenic in all potable water.

A study by the U.S. Geological Survey reports that an estimated 2.1 million people across the United States may be drinking water from wells that have arsenic concentrations above the EPA limit (shown in the map above).


Alarmingly high' levels of arsenic in Pakistan's ground water

Up to 60 million people in Pakistan are at risk from the deadly chemical arsenic, according to a new analysis of water supplies.

The study looked at data from nearly 1,200 groundwater quality samples from across the country.

The resulting risk map shows concentrations well above World Health Organization (WHO) safety guidelines across the Indus plain.

The research has been published in the journal, Science Advances. Arsenic is a semi-metallic element found all over the world in varying concentrations.

Humans come into contact with it because it leaches into groundwater from rocks and sediments.