StudentShare
Contact Us
Sign In / Sign Up for FREE
Search
Go to advanced search...

Heavy metal pollution: causes, effects, analytical methods - Term Paper Example

Comments (0) Cite this document
Summary
Heavy Metal Pollution Any metallic element that has high density and is either toxic or poisonous even at low levels of concentration is known as heavy metal (Lenntech, 2004). The atomic density of these metals are more than 4g/square cm or 5 times more than water…
Download full paper File format: .doc, available for editing
GRAB THE BEST PAPER97.9% of users find it useful
Heavy metal pollution: causes, effects, analytical methods
Read Text Preview

Extract of sample "Heavy metal pollution: causes, effects, analytical methods"

Download file to see previous pages They enter the body through air, food, water and bioaccumulate over a period of time. They exist as ores in rock and some of the examples of such ores are sulphides and oxides. When these ores are subjected to mining, they become pollutants of the environment leading to various environmental problems. heavy metals can also get emitted into the environment by both anthropogenic and natural causes. Mining operations are the main causes of emission of heavy metals into environment. In some cases, heavy metals continue to persistent in the environment long after mining operations have ceased. mercury is introduced into the environment as a byproduct of manufacture of cosmetics and also in the manufacture of sodium hydroxide (Duruibe et al, 2007). Heavy metals can get emitted both in elemental or compound form which can be organic or inorganic. Industrial point sources also are important sources of emission. Cadmium is released as a byproduct of zinc refining and lead from automobile exhausts, smelting activities, old lead paints, degassing of earth's crust and mining (Duruibe et al, 2007). (Source: Duruibe et al, 2007) (Source: Duruibe et al, 2007) (Source: Duruibe et al, 2007) Pollution of environment by heavy metals is prominent in mining areas and old mine sites. The metals are leached out. In areas which are sloppy, the acid water carries them downstream or run-off to sea. Thus, downstream water get polluted easily in mining areas. From these water bodies, the polluted water is transported to other areas through river and sea. Even wells are a source of contamination in this regard (Duruibe et al, 2007). Heavy metals are essential for biological functions in the body. However, in levels of toxicity, they have several adverse effects. General side effects of heavy metals include diarrhoea, stomatitis, hemaglobinuria, tremors, ataxia, vomiting, paralysis and convulsion. Depression and pneumonia can also occur. The nature of effects depends on the organ system involved. Cadmium is one heavy metal that is toxic even in extremely low levels. Long term exposure can lead to renal dysfunction manifesting as tubular proteinuria. Other effects include cadmium pneumonitis, obstructive lung disease, bone defects like osteomalacia and osteoporosis, myocardic dysfunctions and hypertension. The most significant toxin among heavy metals is lead. It has a wide range of toxic effects including teratogenic effects, inhibition of synthesis of hemoglobin, dysfunction of kidneys and other organs and chronic damage to the nervous system. It can also cause damage to the gastrointestinal system and also to the urinary tract system. In children, lead can cause intellectual deficits and learning disabilities. Both acute and chronic lead toxicities can lead to psychosis (Lenntech, 2004). Zinc toxicity has similar side effects as lead and is often mistakenly diagnosed as lead toxicity. However, when taken orally, it is considered to be relatively non-toxic. Systemic damage can occur in high doses of toxicity and some of them include growth impairment, developmental delay, reproductive problems and failure of liver and kidneys. Mercury is highly toxic. It has no known biological effect and it can lead to devastating consequences. It can lead to congenital malformation, spontaneous abortion and gastrointestinal problems. It can cause allergic reactions, some of which can be ...Download file to see next pages Read More
Cite this document
  • APA
  • MLA
  • CHICAGO
(“Heavy metal pollution: causes, effects, analytical methods Term Paper”, n.d.)
Retrieved from https://studentshare.org/environmental-studies/1421681-heavy-metal-pollution-causes-effects-analytical
(Heavy Metal Pollution: Causes, Effects, Analytical Methods Term Paper)
https://studentshare.org/environmental-studies/1421681-heavy-metal-pollution-causes-effects-analytical.
“Heavy Metal Pollution: Causes, Effects, Analytical Methods Term Paper”, n.d. https://studentshare.org/environmental-studies/1421681-heavy-metal-pollution-causes-effects-analytical.
  • Cited: 0 times
Comments (0)
Click to create a comment or rate a document

CHECK THESE SAMPLES OF Heavy metal pollution: causes, effects, analytical methods

Effects of Human Resource Systems on Manufacturing Performance and Turnover

Most of these developments, not surprisingly, have come from communities of scholars focusing on their own particular countries or regions, be it the US (for example, Arthur, 1994; Delery and Doty, 1996; Huselid et al., 1997), the UK (for example, Brewster, 1999; Guest et al., 2003), elsewhere in Europe (for example, D’Arcimoles, 1997; Lahteenmaki et al., 1998; Roderiguez and Ventura, 2003). The difference in perspective on the value of people in organizations and the validity of HRM, particularly in non-Western Countries may be best understood in terms of the concept of locus of human value (Jackson et al., 2003). Jackson et al. (2003) came up with a conceptual map of international organization and human resource management...
12 Pages (3000 words) Essay

Cultural History Versus Political History: The Varying Methods of the Two Fathers of History

Even though they have these similarities and have both been bestowed with the same title, these two historians drastically differed in their approaches.

Herodotus had another title bestowed upon him; he was also called the “Father of Lies.” Much of what is known of him has been gathered from his own writings as few other sources are available from his actual life. It should also be noted that the veracity of this information is in question as Herodotus was known to invent much in his own work, and it was sometimes the practice in Ancient Greece to attribute events from the life of one person to another; for instance, it has been questioned if the accounts of Herodotus’ exile are only due to the fact th...
10 Pages (2500 words) Essay

Effective Methods of Teaching Anatomy

Herein, comparisons will be made to highlight the differences in using anatomical models for study versus self-directed (usually textbook) learning. As well, the use of tutors as an advantage in the medical classroom will be discussed.

Some students are hands-on learners. For them, three-dimensional (3D) anatomical models are effective. “Exploratory tools enable users to investigate structures in ways not possible in the real world” (Implementing, para. 3). These 3D models can represent just about any part of the human body. Models are available of small structures, like the head, or of the entire human skeleton. Models of the entire human body can also be purchased. Some of them even have removable parts so...
6 Pages (1500 words) Report

What Are the Effects of Industrial Pollution to Nature in Turkey

It is observed that electroplating and chemical industries are responsible for the generation of a considerable portion of emissions that contain heavy metals, and may affect adversely on human lives and environment. On the other hand, sugar, pharmaceuticals, and textile industries are responsible for the generation of organic pollutants in the atmosphere. Refineries, fertilizers, stone mines, and thermal power units are mainly the causing sectors of contributing a substantial amount of air pollution in the Turkish atmosphere. In specific, sulfur, nitrogen, and hydrogen sulfide are some of the main pollutants that are generated from the burning of fuels in the abovementioned industries in Turkey. Though vehicular sources also cont...
7 Pages (1750 words) Case Study

Research Methods in Linguistics

 The writer of content tries to preserve his/her culture and also wants his/her culture to get attached to his/her recent living due to which, he/she makes use of the bilingual aspect to write a narrative.

Because of this writing, the English reader faces some problem in decoding the meaning but he/she realizes the presence of another culture by means of this writing. Many writers provide a glossary at the end so that the readers face no problem in decoding the words given in another language such as Soueif has done but many take it for granted that readers know the other language as well.

The article contains a detailed evaluation of the novel by Soueif which can be categorized as the strength of the re...
6 Pages (1500 words) Assignment

Causes of Illegal Drugs Consumption Among Women

...://www.fspublishers.org/jass/past-issues/JASSVOL_3_NO_3/8.pdf) Zaidi, Mujtaba Haider. (1999). Biological and Sociological Causes of Perversion. An article published in psychological review, University of the Punjab, Lahore pp 26-39. http://www.rightstep.com/women-and-addiction.php http://www.unodc.org/pdf/india/publications/women_Book-6-5-03/12_drugabuseamongwomen-emergingglobaltrends.pdf Topic:  Analytic Source Review and Evaluation: Illegal Drugs. Instructions: 1500 words maximum. I Would Like You To Think Of A Title For This Piece Of Work. You Are Supposed To Set Your Own Question. Must Be Related To Illegal Drugs. Then You Will Have To Choose Four Sources, Which You Will Have To Compare And Critically Analyse. Two Of The Sources...
7 Pages (1750 words) Coursework

The Effects of Financial Crisis on Supplier Selection Criteria of the Oil and Gas Industry Equipment Market

It is a difficult task to find those vendors who not only have the adequate quality and quantity of the needed raw materials but who also have an attitude of efficiency and display commitment to customer service (Sonmat, 2006). Further, organizations also strive to locate and select vendors who can be depended upon for long term relationship.

The number of factors or attributes desired from the vendor is vast, and different organizations and different industries place different importance on the attributes (Sonmat, 2006). Some of the vendor attributes may gain importance owing to the nature of the industry, for example, in the case of consumer perishables suppliers, like fresh vegetables or fruits, the buying firm would...
20 Pages (5000 words) Literature review

The Issue of Water Pollution

Researchers use the following classification for water pollution: (1) Putrescible materials; (2) Heated effluents; (3) Inert materials; (4) Toxic materials; (5) Radioactive elements and compounds. Water pollution should be controlled by every state and society as it influences air, water, and natural resources and changes the global climate system/ Industrial use of water began to affect the quality of water in developed and developing countries. A waterwheel that supplied the power for grinding grain did no harm to a millstream; but as the industry began to use great quantities of water to process materials and flush away wastes, even greater pollution than sewage came into being. Sawmills dumped sawdust into rivers and killed of...
7 Pages (1750 words) Article

Effects of the United States of America Troops in South Korea

Despite the few negative incidences of crime committed by the United States of America’s security troops that were deployed in the country on a peacekeeping mission.
Since the war in Korea began in the early nineteen fifties, the United States has stationed tens of thousands of soldiers, mostly the United States’ army personnel, in South Korea. Through the assistance of the South Korean troops and other neighboring governments, the American troops have been able to guard and offer maximum security to South Korean people. In line with the argument of James (2003), ‘most of the military bases in South Korea are relatively isolated’ thus the need for much attention from the troops so as to ensure maximum...
10 Pages (2500 words) Assignment

Alternative Methods of Accounting

Accounting has always been a self-regulated profession. After the 2nd half of the 20th-century changes in accounting occurred due to the influence of private organizations such as the FASB.  In the United States, accountants followed the generally accepted accounting principles (GAAP) to guide their everyday work. Accounting is a discipline that is very strict in its ways and does not welcome change well. In the aftermath of the Enron and WorldCom scandal, the government had to force change with the creation of the Sarbanes Oxley Act of 2002 due to a lack of trust in financial information. 

The efficient market hypothesis states that securities are typically in equilibrium and that they are fairly priced in th...
8 Pages (2000 words) Article
sponsored ads
We use cookies to create the best experience for you. Keep on browsing if you are OK with that, or find out how to manage cookies.

Let us find you another Term Paper on topic Heavy metal pollution: causes, effects, analytical methods for FREE!

Contact Us