Toxicology testing

Toxicity is the levels of chemical which causes harm to organism. A median level toxicity, LD50 is the levels of chemical required to kill half the population on organisms. LD50 metrics is used to define toxicity and any level beyond this measure is considered lethal causing acute toxicity and mortality. At No observed adverse effect level (NOAEL) , there is no biologically or statically significant adverse effect of exposure on organism. The exposure level in minimum and the risk is acceptable…

million (ppm). Yet soil lead levels in many areas exceed 200 ppm. The research will highlight correlation between the amount of lead found in children’s parks and hospital admissions for symptoms of anemia in Miami-Dade County. Planned Research: Testing the ppm of lead at four parks in Miami. Bill Baggs Cape Florida State Park located (25.6736°…

Toxicity Testing and Determining the LC50 Introduction This report discusses an experiment of Toxicity test done in Richland lab to determine the LC50, a test that is used to find out what concentration of a substance in this case household chemicals that will kill 5o percent of the population of the brine shrimps, with the exposure household chemicals such as , Ammonia, Bleach, and Vinegar, and the morality with each solutions. I and my group splitte the Brine shrimps into 4 containers,…

Subject Organisms For this experiment, I used Daphnia magna and Daphnia pulex that was cultured from stocks from Aquatic Bio Systems Inc. (Fort Collins, CO). Each species was cultured individually in 900 mL glass jars filled with moderately hard water. I created moderately hard water using the recipe as follows: 0.473 g CaSO4 , 0.959 g NaHCO3 , 1.223 g MgSO4 • 7H2O , and 0.039 g KCl per 10 L of deionized water. All references to water for the remainder of the paper refers to moderately hard…

Lipstick and Lead Poisoning Throughout history many unhealthy substances, including lead, have been used as ingredients during the various times in the history of makeup. Modern day cosmetics are more controlled, regulated and their ingredients and the potential side effects are more fully understood. However, recent research by the Campaign for Safe Cosmetics and the Food and Drug Administration (FDA) indicate that there are approximately 400+ best-selling lipsticks on the market today that…

don’t notice little Jane just picked up a paint chip off the floor from the family’s home that dates back to early 1800s, when lead paint was used. Which then opens up little Jane, to have lead poisoning. Even today in the pediatric world, lead testing has become common in children, years after lead paint was banned from the United States, as some countries that we import from may still use lead based paint or because a child is exposure from their home, or a toy that dated back before the ban…

The first source was a bathtub faucet which was measured in a closed bathroom. It was measured about six inches from the faucet only getting 75.7dBA. The second source was an all metal toolbox closing. Measured six inches from the source, while it is only a quick increase at 90.1Dba, everyday exposure can be damaging. The next source was an acoustic guitar being strummed in my apartment. The meter was roughly one foot away on a table. This was under the minimum requirement to be considered…

Lead poisoning occurs when there is an immense build-up of lead in a person’s body. This can happen over the course of a couple of months, to years. It is extremely serious and can sometimes turn into a fatal condition. Lead is usually found in certain paints, art supplies, or contaminated dust. It can enter the human body through inhalation or consumption. While lead poisoning can be cured, its effects cannot be reversed. The most well-known case of lead poisoning in our present time is Flint…

The generation known as the Millennials, are most often perceived as a highly disadvantaged and targeted group. There are many factors that contribute to the perception of this particular group some of which, are very saddening and truly unfair for the Millennials, and I am sad to say that I am part of that generation. The way that I, along with many other people see it, is that most of the problems the Millennials are dealing with today, have been the results of failure from the previous…

1- identify and briefly describe the public health topic you chose. Public health in regards to exposure to heavy metals is always of concern. Exposure to lead has been a major environmental hazard for a very long time. Reference to Lin, S. (2011), reveals that, I t poses a threat to the health of individuals when an intolerable amount of lead is either inhaled or ingested. Routes of exposure to lead include contaminated air, water, soil, food, and consumer products. Occupational exposure is…