Research Paper on "Environmental Toxicology of Lead Pb"
Research Paper 3 pages (1157 words) Sources: 6
[EXCERPT] . . . .
Environmental Toxicology of LeadLead
Chemical Nature of Lead
Basically, Lead is a major group element, which is found beneath Tin, in group fourteen of the periodic table and its symbol is Pb. It is a bluish -white shiny metal and is extremely squashy, pliable, dense, and conducts electricity poorly. Moreover, it has a small tensile strength and resists decay. Lead has an atomic number of eighty two (82). Its atomic mass is 207.2 g.mol -1. Lead has an electro-negativity of 1.8. It has a boiling point and melting point of 1755 "C and 327 "C respectively. The gravity of lead is 11.35 and has a valence of either two or four (Water Treatment Solutions: Lenntech, n.d.).
The uses of Lead
Lead metal may be used as an unadulterated metal, alloyed with a number of other metals, or like a chemical composite. Firstly, Lead is used as a chief constituent of the lead acid battery and is usually utilized in an automobile battery. Secondly, as a result of its elevated density, mass to volume proportion and due to the fact that it resists decay; lead is employed in making of ballast keel of boats and scuba pitching weight straps. Thirdly, it is used in making of shiny bars for tainted glass or other multi-lit casements or windows. Fourthly, owing to the low softening point and price, Lead is used in making of guns and projectiles for fishing sinkers. White Lead, Lead Sulphate and Lead Chromate are used as rudiments in paints and earthenware varnishes, particularly in colors cherry and yellow. (Berard, 2005).
Environmental Guidelines for Lead in drinking water, Soil, Stream Sediment, and for Acute and
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In actual fact, Lead that is found in intake water may create an array of unpleasant health impacts. In toddlers and kids, exposing them to lead which is in drinking water beyond the action echelon may result in impediment in bodily and psychological growth. It may also cause minor shortfall in concentration extent and learning talents. In grown-ups, it lead may augment the blood pressure. Moreover, they may over numerous years encounter kidney tribulations or elevated blood pressure. In realty, lead is hardly ever in spring water. However it will enter water in the tap during decomposition of plumbing objects. Residential homes that were constructed prior to the year nineteen hundred and eighty six are further expected to have lead pipes and solder. The main regular trouble is with brass and fittings that may leak considerable quantities of lead metal inside the water. This is particularly in sizzling water (U.S. Environmental Protection Agency, 2007).
In general, lead polluted soil may cause a threat through express intake, uptake in vegetable gardens, or tracking into homes. Unpolluted earth has lead amounts which are fewer than fifty parts per minute. However, earth lead echelon in several metropolitan regions surpasses two hundred PPM. The standard for lead in naked earth in playing fields is four hundred PPM. This by weight and it is one thousand two hundred PPM for non- play fields. The earth or soil screening level that is SSL for lead accounts for a conventional approximation. This is for an echelon which could be shielding of civic health in suburban soils. It is founded on an investigation of the express intake alleyway for kids. This figure is for direction simply and isn't enforceable.
In reality, lead that enters water systems such as rivers, seas and lakes through above the… READ MORE
Quoted Instructions for "Environmental Toxicology of Lead Pb" Assignment:
“I am trying to put together 10-20 slides with the information provided. Please organize the paper as follows, so I can easily break it into slide format. Thank you.
Organization: it should have the following sections:
Introduction: Defines the purpose. Include the high points of the chemical nature of Lead (Pb) (atomic number, valence states, etc.). Also, what the abundance of Lead (Pb) in the Earth*****s crust and in seawater.
Uses: Describe the uses of Lead (Pb). you may also find useful information from the USGS Minerals Information Team (http://minerals.usgs.gov/minerals/index.html). Find your Lead (Pb) under *****Commodities*****.
Environmental Guidelines: Summarize environmental guidelines for Lead (Pb) in drinking
water, soil (residential and industrial), stream sediment, and for acute and chronic toxicity to
aquatic organisms. Note: there may not be guidelines for Lead (Pb) in all media.
Pathways of Environmental Impact: Describe pathways that the element can affect
humans, and aquatic organisms. Are there key chemical transformations that affect the degree of
impact? What are they?
Case Study: Describe at least one case study that highlights the environmental toxicology of
Lead (Pb) to humans, aquatic organisms, or other wildlife. You must find an example in the scientific literature.
Conclusion: Summarize the major findings
References: cite all sources of information in APA, including in-text. websites like cdc, epa are acceptable, but sourses should be scientific journals, research data sources.
How to Reference "Environmental Toxicology of Lead Pb" Research Paper in a Bibliography
“Environmental Toxicology of Lead Pb.” A1-TermPaper.com, 2010, https://www.a1-termpaper.com/topics/essay/environmental-toxicology-lead-chemical/2354362. Accessed 5 Oct 2024.
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