chemical testing to determine amount of alcohol or controlled substance is also known as?
480562
There is blood, urine, and oral swab tests for alcohol or controlled substance.
426332
Alcohol alcohol alcohol.
43269
it is level 2 controlled substance
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I dont know. What substance are you talking about? This has a table that will tell you.\n\nhttp://en.wikipedia.org/wiki/Drug_testing
503484
Only pot and coke. I stopped though. Made me slow and I'm not as fun as I used to be. I hate myself. The first time I tries pot, I think it was laced with some other shit. Big mistake. Don't do drugs, it's a waste of time. Does alcohol count as one of the drugs you want to know?
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Suspect this is what you mean...\n\nSuppose you have 0.500 g of a substance you believe is pure...\nyou analyse it and determine that it contains 0.300 g of the substance you are looking for..\nso your sample is (0.300/0.500) x 100% pure  = 60%
661523
testing for certain substances can, and most times does involve using different substances.
235402
See comment above.\n\nYou do need to do several trials at various concentrations though. You can then determine it through a linear regression.\n\nI also suggest that you consult a book on Analytical chemistry, because Beer's law has limitations. For example, it loses linearity at higher concentrations.
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In Medical terms, it is used for ethanol (alcohol)
649333
When an analyte that is a reducing agent is titrated directly with a standard iodine solution, the method is called "iodimetry".\n\nWhen an analyte that is an oxidizing agent is added to excess iodide to produce iodine, and the iodine produced is determined by titration with sodium thiosulfate, the method is called "iodometry".
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http://www.academic.marist.edu/~jfjp/chem351E3.htm\n\nThe alternate would be ion chromatography
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The Beer-Lambert Law forms the basis of Spectroscopy, an analytical tool for measuring concentrations.  Spectrophotometers are instruments used in laboratories to measure concentrations.  The most common is a UV/Vis spectrophotometer.  This instrument passes light(in this case UV or visible light) through a fixed length of solution and measures the radiation absorbed at a particular wavelentgh.  Thus the instrument gives an absobance reading of the solution.  Since the thickness or length of the solution is constant (the solution is placed in a glass cuvette, a little glass square that is of known length/thickness) from the Beer-Lambert law, the absorption is proportional to the concentration.  So, you prepare say three solutions of chlorophyll that are of three known concentrations (a high, middle and low standard) and measure their absorbance.  Now you measure the absorbance of your unknown sample.  Finally you use the mathematics of linear regression, to extrapolate the concentration of your unknown sample.\n\nThis is the most common and easiest way to measure concentrations in an analytical laboratory.
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if you mean "controlled substance" that means any kind of drug or narcotic that is either illegal or requires a prescription.  if they don't have a prescription or it's on the DEA's schedule of drugs, they can be charged with "possession of a controlled substance".\n\non the other hand, i've sometimes heard "control device" used for when someone is arrested multiple times for drunk driving.  in some states the judge will order that a device, basically a portable breathalyzer, be installed in the person's car.  this makes it so that they have to blow a clean (no alcohol) test in order to start their car.  presumably someone could be arrested for disabling or removing it.
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I'm not aware of the law here, but i guess we are talkin about two different scenarios here. Under influence or alcohol intoxication and Induced hypnosis under sodium pentothal in controlled enviornment. The second one might be helpful to generate pertaining information. But i have a strong hunch about evidence being gathered under both scenarios to be inadmissible in the court of law
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diagnostic test\n\nn : an assay conducted for diagnostic purposes
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Hi, thats quite a difficult one. \n\nI will tryto give you what i can.\n\nyou can start with wikipedia. Thats because it gives things in the right sequence and then there are a lot of links.\n\nIn general, it describes a term Forensic Chemistry. Forensic chemistry applies the principles of chemistry to law enforcement. Some forensic chemists may deal with explosives or poisons. The bulk of most forensic chemists work is on the analyses of controlled substances. According to federal and state laws an accurate net weight and positive identification of a substance must be obtained before a person can be tried for its possession, distribution or manufacturing. State and local regulations can vary, but in general an analysis must be accomplished based on certain weight criteria. After the weight is obtained the chemist may perform presumptive testing using chemical reagents that cause a color or odor change. The result of the presumptive tests give the chemist clues that guide what type of further testing is required.\n\n\nSee more at :\nhttp://en.wikipedia.org/wiki/Forensic_chemistry\n\nYou will find a lot of links here, eg to Gas chromatography-mass spectrometry etc.\n\nSometihng to read here:\nhttp://www.keele.ac.uk/undergraduate/prospectus/2006/forensic.htm\n\nhttp://www.aafs.org/yfsf/newsletter/Sept2001/Goodpaster.html\n\nhttp://www.forensic-science-society.org.uk\n(The official web site of The Forensic Science Society.)\n\nMore useful links at:\nhttp://www.keele.ac.uk/depts/forensic/resources.htm\n\nYou will find links to a few people who you can write to. \nhttp://www.enfsi.org/search?SearchableText=chemistry&Title=&Description=&created%3Adate=1970%2F02%2F01+00%3A00%3A00+GMT&created_usage=range%3Amin&pt_toggle=%23&portal_type%3Alist=Collector&portal_type%3Alist=Collector+Catalog&portal_type%3Alist=Collector+Issue&portal_type%3Alist=Collector+Issue+Transcript&portal_type%3Alist=Collector+Subset&portal_type%3Alist=ContactFolder&portal_type%3Alist=ContentPanels&portal_type%3Alist=ControlTool&portal_type%3Alist=DataGridDemoType&portal_type%3Alist=Discussion+Item&portal_type%3Alist=Document&portal_type%3Alist=DynamicPage&portal_type%3Alist=EUFolder&portal_type%3Alist=Event&portal_type%3Alist=ExFile&portal_type%3Alist=ExtendedEvent&portal_type%3Alist=ExtendedLink&portal_type%3Alist=ExtendedNews&portal_type%3Alist=FAQ&portal_type%3Alist=FAQTheme&portal_type%3Alist=Favorite&portal_type%3Alist=File&portal_type%3Alist=Folder&portal_type%3Alist=GroupSpace&portal_type%3Alist=Image&portal_type%3Alist=Job&portal_type%3Alist=Large+Plone+Folder&portal_type%3Alist=Link&portal_type%3Alist=Member&portal_type%3Alist=MemberDataContainer&portal_type%3Alist=Message&portal_type%3Alist=News+Item&portal_type%3Alist=Newsletter&portal_type%3Alist=NewsletterBTree&portal_type%3Alist=NewsletterReference&portal_type%3Alist=NewsletterTheme&portal_type%3Alist=NewsletterTopic&portal_type%3Alist=Plone+Site&portal_type%3Alist=PloneArticle&portal_type%3Alist=PloneArticleMultiPage&portal_type%3Alist=PloneContactsView&portal_type%3Alist=PressRelease&portal_type%3Alist=PressReview&portal_type%3Alist=SCAuditorium&portal_type%3Alist=SCAuditoriumItem&portal_type%3Alist=Section&portal_type%3Alist=Subscriber&portal_type%3Alist=TempFolder&portal_type%3Alist=Topic&Creator=&submit=Search
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In chemistry, concentration or Mass Percent is the measure of how much of a given substance there is mixed with another substance. This can apply to any sort of chemical mixture, but most frequently is used in relation to solutions, where it refers to the amount of solute dissolved in a solvent.\n\nTo concentrate a solution, one must add more solute, or reduce the amount of solvent (for instance, by selective evaporation). By contrast, to dilute a solution, one must add more solvent, or reduce the amount of solute.\n\nThere exists a concentration at which no further solute will dissolve in a solution. At this point, the solution is said to be saturated. If additional solute is added to a saturated solution, it will not dissolve. Instead, phase separation will occur, leading to either coexisting phases or a suspension. The point of saturation depends on many variables such as ambient temperature and the precise chemical nature of the solvent and solute.\n\nQualitative description\nOften in informal or non-technical language, concentration is descibed in a qualitative way, through the use of adjectives such as "dilute" or "weak" for solutions of relatively low concentration and of others like "concentrated" or "strong" for solutions of relatively high concentration. Those terms relate the amount of a substance in a mixture to the observable intensity of effects or properties caused by that substance. For example, a pratical rule is that that the more concentrated a chromatic solution is, the more intensely coloured it is.\n\nQuantitative notation\nFor scientifical or technical applications, a qualitative account of concentration is almost never sufficient, therefore Quantitative notations are needed to describe concentration. There are a number of different ways to quantitatively express concentration; the most common are listed below.\n\nNote: Many units of concentration require measurement of a substance's volume, which is variable depending on ambient temperature and pressure. Unless otherwise stated, all the following measurements are assumed to be at standard state temperature and pressure (that is, 25 degrees Celsius at 1 atmosphere or 101.325 kPa).\n\nMass percentage\nMass percentage denotes the mass of a substance in a mixture as a percentage of the mass of the entire mixture. For instance: if a bottle contains 40 grams of ethanol and 60 grams of water, then it contains 40% ethanol by mass. Commercial concentrated aqueous reagents such as acids and bases are often labeled in concentrations of weight percentage with the specific gravity also listed. In older texts and references this is sometimes referred to as weight-weight percentage (abbreviated as w/w).\n\nMass-volume percentage\nMass-volume percentage, (sometimes referred to as weight-volume percentage and often abbreviated as % m/v or % w/v) denotes the mass of a substance in a mixture as a percentage of the volume of the entire mixture. Mass-volume percentage is often used for solutions made from solid reagents. It is the mass of the solute in grams divided by the volume of solution in millilitres and multiplied by one hundred .\n\nVolume-volume percentage\nVolume-volume percentage or % (v/v) describes the volume of the solute in mL per 100 mL of the resulting solution. This is most useful when a liquid - liquid solution is being prepared. For example, beer is about 5% ethanol by volume. This means every 100 mL beer contains 5 mL ethanol (ethyl alcohol).\n\nMolarity\nMolarity (M) denotes the number of moles of a given substance per litre of solution. For instance: 4.0 litres of liquid, containing 2.0 moles of dissolved particles, constitutes a solution of 0.5 M. Such a solution may be described as "0.5 molar." (Working with moles can be highly advantageous, as they enable measurement of the absolute number of particles in a solution, irrespective of their weight and volume. This is often more useful when perform