Research Paper On Arsenic

Francois Demelle of France published the first treatise on systematic document in 1609. One of the first documented events of physical matching used in a court case was in Lancaster, England when John Toms was found guilty of murder just by using a torn edge of newspaper in the murder weapon (a pistol) that matched newspaper in his pocket in 1784. Over time in the 1800’s the field of forensic science saw substantial progress. In 1832 chemist James Marsh was asked to test coffee for the poison arsenic by the prosecutor in order to prove the defendant, John Bodle had killed his grandfather using this method. Even though after trial the defendant later confessed, the jury wasn’t convinced of the accuracy of the test at the time so they acquitted him. This angered and infuriated James so much he was determined to come up with a better way to test for arsenic. He successfully came up the Marsh Test which actually made arsenic poisoning murder rarer because the fear of being caught was more likely to happen. In 1880 William James Herschel and Henry Faulds published a paper in the British scientific journal Nature describing the uniqueness of each person’s

For our science assessment we had the task to research about a metal of our choice. Since I am really into computers, I chose copper. A metal used in all kinds of wires, cpu’s and other stuff without a computer wouldn’t work. This fits really well into what we have to do for the second part, describe how this metal has helped human society.

Due to its physical characteristics (no odor, no color, and no flavor), arsenic exposure is often unnoticed, especially when ingested through drinking water. Therefore, the key to prevention of Dermatofibroma is understand the risk factors whether environment such as chronic arsenic exposure due to the ingestion of naturally-contaminated water, groundwater contamination due to leaching of arsenic from rocks and soil frequently results in concentrations above 50 mcg/L, which are associated with carcinogenesis in humans. Occupational exposure via inhalation of arsenic-containing vapors occurs during smelting, mining, refining, electroplating, and manufacturing of decorative-glass, pesticides, gallium arsenide computer microchips, and pressure-treated wood. Documented regions with natural groundwater arsenic contamination include Millard County, Utah; Lane County, Oregon; Lassen County, California; Fallon, Nevada; Fairbanks, Alaska; and New Hampshire, also persons living in the southwestern United States are at higher risk for being exposed to elevated levels of arsenic in drinking water. (Sarina B Elmariah MD PhD, Robert Anolik MD, Ruth F Walters MD, Karla Rosenman MD, Miriam K Pomeranz MD, Miguel R Sanchez MD, Dermatology Online Journal 14 (10): DOI: 10.1111/jdv.13092 24 19 July 2015, Invasive squamous-cell carcinoma and arsenical keratosis.). There currently is no concrete clinical-pathological evidence

They have to be sure without a shadow of a doubt that she is guilty. There is no consistency it’s like contradiction on their own behalf. It was stated that she did one thing but then come to find out there is no proof to be show in the evidence. She was innocent from the first murder because they said the husband died from an intestinal disorder, but arsenic doesn’t cause that type of death. Arsenic poisoning makes you have gastric fever is a painful and slow death. It’s been said that arsenic is found on earth and when inhaled it can kill

Copper is a naturally occurring element that can be found in all plants and animals. A certain amount of copper is necessary for health, and the human body has developed a way to maintain the proper level of copper in it (Minnesota). Even so, large concentrations of copper, and general long-term exposure, can have a negative impact on the body. Symptoms include stomachaches, vomiting, diarrhea, liver and kidney damage, and even death (Lenntech). Exposure to copper comes from many areas, but the most common one is through the water. Copper is commonly found in plumbing pipes, which can lead to high levels of copper in drinking water and fresh water sources due to erosion. Lakes and streams are also treated with copper to prevent algae overgrowth (Group).

While nitrates are one of the major contaminants in the area, San Joaquin Valley residents face drinking water pollution from many other sources including arsenic, coliform bacteria, and pesticides. Arsenic is a naturally occurring semi-metal element that is found in different types of rocks. While arsenic primarily occurs naturally, human activities impact the amount of arsenic in groundwater. Arsenic is not only toxic at high concentrations, but also harmful after prolonged exposure at moderately elevated levels. California recognizes arsenic as a human carcinogen and believes prolonged exposure to the element to be associated with various cancers, including skin, bladder, kidney, lung, and liver cancers. A study in Maine found a connection between water contaminated

Till this day there are several cases that have huge amounts of death through arsenic. In fact, one of the worst serial killer in Britain was Mary Ann Cotton. They believe Mary Cotton has killed around twenty-one people. Mary was married four times but three of her husbands died as well as her children. At age 26, she had four children but they all died in infancy. In the mid-19th century, infancy was high so no one expected anything. A few years later three more children died as well followed by her husband and Mary collected money from his life insurance policy. From there several of her spouse children died as well as hers of which she poisoned them all and killed them. Mary was hanged for the crimes she committed. There we several books written about Mary such as “Mary Ann Cotton: Britain’s First Female Serial Killer” as well as numerous articles.

This chemical tends to occur naturally in soil, so sometimes it can make its way into your well. If you drink too much water contaminated with arsenic, you will be susceptible to an array of harsh side effects such as vomiting and a burning feeling. If your water supply is never checked and you drink arsenic-laced water regularly over time, your risk factor for developing several kinds of cancer will increase substantially.

Trivalent (arsenite) and pentavalent (arsenate) arsenic produce different effects on cells, yet there is little distinction between the two forms of arsenic when discussing signs and symptoms of poisoning. An important fact to note is that during the metabolism of arsenate, 50-70% of it will be reduced to arsenite in the first step of the process. Therefore, the differences in the cell effects are seen from the 30-50% of the pentavalent arsenic unchanged via the bioactivation step of oxidizing glutathione or enzymatically catalyzed by arsenate reductase.1,2

“Long-term exposure to low doses of arsenic may change the way cells communicate, and reduce their ability to function, according to researchers at Dartmouth University. It could play a role in the development of diabetes, cancer, vascular disease and lung disease. The Food and Drug Administration says that long-term exposure to high levels of arsenic is associated with higher rates of skin cancer, bladder cancer and lung cancer, as well as heart disease.” (https://www.livescience.com/23304-arsenic-rice-fda-health-effects.html). Arsenic goes into the human body through inhalation, ingestion, and skin absorption.

My plant is called Aconite though other names for it are Monkshood, Wolfsbane, "the queen of poisons", leopard's bane, women's bane, blue rocket, and devil's helmet.

Previous research has pointed out that the mechanism by which arsenic exerts its toxic effect is through impairment of cellular respiration by the inhibition of various mitochondrial enzymes, and the uncoupling of oxidative phosphorylation. Most toxicity of arsenic results from its ability to interact with sulphydryl groups of proteins and enzymes, and to substitute phosphorous in a variety of biochemical reactions

The primary sources for arsenic in the general population include contaminated water, food, and soil. The two forms of inorganic arsenic include: trivalent arsenic (As III) and pentavalent arsenic (As V). The most common inorganic form of arsenic in the environment is pentavalent arsenic. When comparing toxicity, trivalent arsenic is approximately 2-10 times more toxic pentavalent arsenic. Arsenic poisoning produces effects on multiple body systems with the inorganic forms being highly toxic. Both trivalent arsenic and pentavalent arsenic have different mechanisms of action, which determines the effects they have on cells.

Agate, a semi-precious gemstone is a translucent variety of microcrystalline quartz and was first discovered along the shore line of the river Sicily by Theophrastus, a Greek naturalist.

In this study, an insignificant positive correlation between As and Mn has observed, while an insignificant negative correlation between As and Fe has existed in groundwater aquifer (Table 4). This finding is in good agreement with the earlier correlation matrix analysis of arsenic by Ohno et al. (2005) and Reza and Jean (2012) in the fine-grained core sediment samples in northwestern Nawabganj district, Bangladesh where they reported no