Current Suspected Overdose Deaths in Delaware for 2019: Get Help Now!
Contaminated drinking water has been one of the most serious public health threats since the beginning of time. The Delaware Public Health Laboratory is certified by the Environmental Protection Agency in accordance with the Safe Drinking Water Act to evaluate inorganic and organic chemicals in drinking water from public supplies for compliance purposes. Environmental Laboratory also evaluates drinking water from private supplies from citizens that purchase a testing kit. The Environmental Laboratory section performs analysis for over 140 chemical pollutants this includes Volatile Organic Compounds, Disinfection By-Products, Trace Metals, Mercury, Anions, Routine Metals, Alkanlinity, Total Dissolved Solids, and Conductivity.
The Inorganics Analytical Laboratory provides testing for both primary and secondary contaminants that could be present in drinking water which help determine the suitability of drinking water for human consumption. The Environmental Laboratory has various instruments to perform the analysis of the chemical testing, see list below. These instruments require proper calibration, quality control verifications, and troubleshooting experience to properly analyze samples according to the EPA and Standard Methods.
The Organics Analytical Laboratory provides testing for primary, regulated and unregulated contaminates in drinking water that could potentially be a health risk for humans if consumed. The Environmental Laboratory has various instruments to perform the analysis of the chemical testing, see list below. These instruments require proper calibration, quality control verifications, and troubleshooting experience to properly analyze samples according to the EPA and Standard Methods.
Gas spectrometry-mass spectrometry (GCMS) is a combination of both the process of GC and MS. Its purpose is to separate the chemical elements of a certain compound and identify the molecular level component. In the process, the mixture will be heated in order to separate the elements. Once it vaporizes, it passes through the column carried by an inert gas, usually helium. It then proceeds to the mass spectrometry process, where it is separated and its components identified by the mass of the compound. (Cited for definition and provides more information on GC/MS)
The electron capture detector (ECD) is used for detecting electron-absorbing components (high electronegativity) such as halogenated compounds in the output stream of a gas chromatograph (GC). The ECD uses a radioactive beta particle (electron) emitter in conjunction with a so-called makeup gas flowing through the detector chamber. The electron emitter typically consists of a metal foil holding 10 millicuries (370 MBq) of the radionuclide 63Ni (nickel). Electrons from the electron emitter collide with the molecules of the makeup gas, resulting in many more free electrons. The electrons are accelerated towards a positively charged anode, generating a current. As the sample is carried into the detector by the carrier gas, electron-absorbing analyte molecules capture electrons and thereby reduce the current between the collector anode and a cathode (There is therefore always a background signal present in the chromatogram). The analyte concentration is thus proportional to the degree of electron capture. ECD detectors are particularly sensitive to halogens, organometallic compounds, nitriles, or nitro compounds. (Cited for definition and provides more information on GC/ECD)
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