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Asked by: Caitlin Pray
School:Chenango Valley High School
Grade:Michael Br

Volleyball and cheerleading

Career Interest:A medical doctor and playing college volleyball


Answered by: Siddhartha Mitra
Title:Assistant professor of geology, Binghamton Univers
Department:Geological Sciences and Environmental Studies
About Scientist:

Research area: Environmental chemistry

Ph.D. school: Virginia Institute of Marine Science at the College of William and Mary

Family: Wife and one dog (a spoiled rotten and very happy black lab)

Interests/hobbies: A runner, a player of guitar, and a swell cook

Web page


Date: 02-15-2004

Question: Is there any way that individuals can test and verify pollution in their homes caused by toxic spills without a lot of expense?


It is not easy for individual homeowners to test and verify contamination in their homes from nearyby toxic spills. That is because it can be challenging to analyze and accurately verify small amounts of any toxic chemical in the natural environment.

A toxic chemical typically exerts an adverse health effect at a low concentration. Because only a small amount of a toxic chemical needs to exist to be considered dangerous, detecting and quantifying such low levels of chemicals in an accurate manner is presently difficult. Novel research in the area of "Environmental Sensors" is being conducted by many individuals to overcome some of these analytical challenges. However, such technologies require further modification before they can be used to accurately measure trace amounts of toxic chemicals in the natural environment.

Local water companies routinely test the water that they supply residents for a suite of water quality parameters such as: alkalinity, dissolved oxygen, hardness, total dissolved solids, and volatile organic contaminants. If a resident is concerned about their local water quality with respect to these parameters, they can contact their water company and ask for a copy of a report for a well in their regional area. Keep in mind however, that these water quality parameters may not offer much information about toxic spills in the same geographical area.

One important thing to remember is that quite often with relatively little expense, individuals can minimize the risk of exposure from toxic chemicals to themselves. For example, if someone is concerned about the drinking water in their house being contaminated, for a reasonable price, they can install a filter onto their drinking water tap. There are also many other types of portable drinking water filtering pitchers/dispensers. While such devices will not completely eliminate contamination, it will vastly improve the quality of water being consumed.

Another potential pathway of exposure also resulting from contaminated water occurs via inhaling potentially contaminated water vapor during showering. Again, a person can minimize this risk by simply reducing the amount of time they spend showering.

Similarly, if a resident is concerned about inhaling toxic fumes from a regional spill which may have inadvertently entered their dwelling, they can minimize their personal exposure by providing adequate ventilation in their homes; doing so would minimize the buildup of these fumes within the home.

Ask a Scientist appears Thursdays. Questions are answered by faculty at Binghamton University.  Teachers in the greater Binghamton area who wish to participate in the program are asked to write to Ask A Scientist, c/o Binghamton University, Office of Communications and Marketing, PO Box 6000, Binghamton, NY 13902-6000 or e-mail Check out the Ask a Scientist Web site at To submit a question, download the submission form(.pdf, 460kb).

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Last Updated: 6/22/10