To identify a white powder that is containing at least 80% of purity of Cocaine, a forensic drug chemist would utilize some of the following techniques such as the Color test, Gas Chromatography/Mass Spectrometry (GS/MS), Microcrystalline test, Chromatography test combined. This may seem like a large amount of tests to perform at once to identify the white powder and the percentage of purity. This process works for the forensic scientists that need to analyze the powder to the best of their ability. A Forensic Scientist cannot complete only one test to identify the cocaine’s purity but with conducting a series of tests it can result in a qualitative and quantitative analysis. The color and GS/MS test are utilized to identify the white powder. Why should they use two of the basically same tests? This is done to back up their initial findings on the first outcome and can be verified by other to receive the same outcome. The arresting officer will usually administer the first test known as the color test or field test. Another name for the Color test is the Scott test. “The Scott test is a color test for cocaine. A powder containing cocaine turns solution …show more content…
The next test, Microcrystalline, that will be performed is the microcrystalline test to confirm the color test findings. The Microcrystalline test requires the Forensic Chemist to drop a chemical reagent onto the powder that is being questioned at this time on a microscope slide. When a little amount of time has passed the chemist will look through a microscope to observe the regents chemical reaction. This chemical reaction will produce a “crystalline precipitate” (Saferstein, 2013). The shape and size of the crystals are highly likely to give the characteristics of the drug when observed through a microscope (Saferstein, 2013). If this test is conducted correctly it will identify one single substance or drug confirming the qualitative
The purpose of the Unknown White Compound Lab was to identify the unknown compound by performing several experiments. Conducting a solubility test, flame test, pH paper test, ion test, pH probe test, conductivity probe test, and synthesizing the compound will accurately identified the unknown compound. In order to narrow down the possible compounds, the solubility test was used to determine that the compound was soluble in water. Next, the flame test was used to compare the unknown compound to other known compounds such as potassium chloride, sodium chloride, and calcium carbonate. The flame test concluded that the cation in the unknown compound was potassium. Following, pH paper was used to determine the compound to be neutral and slightly
Forensic Science Introduction: Someone in a restaurant has suddenly fallen ill and a mystery powder has been discovered with the victim. As the chief investigator, your duty is to identify the mystery substance through a lab. In this lab, it will consist of five known compounds and one unknown compound. Your job is to distinguish which one out of the five substances is the mystery powder. To figure out the mystery matter you will have to compare their physical and chemical properties and match them with the appropriate compound.
The purpose of conducting experiment was to determine the identity of white compound. Based on the 5 gram of unknown white compound several experiment conducted including solubility test, pH test, flame test, and ion test. Several materials including chemicals used throughout experiment and will be described through paragraphs.
The Cocaine Kids and Dorm Room Dealers are two very different, but yet similar books. Cocaine Kids are about a group of kids, primarily of Hispanic race, with one kid of the Black race. The kids were raised in the inner city of New York. Dorm Room Dealers are about White, middle to upper-middle class college students, who was selling drugs for their status. The purpose of this paper is to prove that there are racial disparities among drug users. There will be examples from the texts that show the different takes on the drug markets and how race plays a factor. There also will be how these experiences shape the kids drug dealing and using. The paper will conclude how all the kids either remained in the drug career or left the drug career.
The analysis of the samples should be used only to confirm or negate match between the sample taken from the crime scene fgand the sample taken from the suspect. That is, it should sdfremain as an identifgication tool only. There should be no further analysis of the DNA to suggest psychological characteristics that would make the suspect more likely to have cdfommitted the crime. This rule should apply also to samples taken from convicted dfdoffenders for a data vor dagta bank.
In the second experiment with the green color, I can safely conclude that the color green in this case is very soluble and we would need longer filter paper, perhaps more time to safely separate the different colors that make up the color green.
A potassium permanganate test and a ceric nitrate test were used to test for the presence of alcohol.
By doing this experiment, I can know the physical and chemical properties of these samples. After I get my results about the physical and chemical properties of these samples, I can compare my results with the information given by the past student and identify the 5 unknown samples, finding out which sample is which substance. Hypothesis = ==
"Cocaine delivers an intensity of pleasure - and despair - beyond the bounds of normal human experience."
This form of testing is used for determining if an individual is inebriated or not. James and Nordby (2009) stated that an equilibrium exists between alcohol in the bloodstream and alcohol in the lung such that, on average, the concentration of blood alcohol is 2100 times greater than the concentration of breath alcohol (p. 63). Since this equilibrium exists, one can measure the breath alcohol and infer the corresponding alcohol concentration in the bloodstream (James & Nordby, 2009 p. 63). An advantage of this form of testing is that it can be conducted without drawing a blood sample and testing it. This allows personnel such as police officers to test individuals on the spot versus having to take someone in and draw a blood sample and wait for results to come
A toxicologist is charged with the responsibility for identifying and detecting the presence of poisons and drugs in
The conical vial was placed in a small beaker and allowed to cool to room temperature. The mixture was Cooled thoroughly in an ice bath for 15-20 minutes and crystals collected by vacuum filtration on a Hirsch funnel. The vial was rinsed with about 5 mL of ice water and transferred into to the Hirsch funnel and again washed with two additional 5mL portions of ice water. Crystals were dried for 5-10 minutes by allowing air to be drawn through them while they remained on the Hirsch funnel. The product was transferred to a watch glass plate and allow the crystals to dry in air. Crude acetaminophen product was weighed and set aside a small sample for a melting point determination and a color comparison after the next step. Calculation of the percentage yield of crude acetaminophen (MW = 151.2). was done and recorded in the lab notebook.
When a suspect’s weapon is examined in the lab, it will be test fired into a box filled with cotton or a tank of water to provide the examiner with the bullets and cartridges with a known history. Using a microscope, the known cartridges are compared with the ones in question. With some patience, skill, and a little luck, experts can definitively say that a certain firearm and no other fired this bullet, or ejected this cartridge.
Drug testing can be a scary process, although it can be a very easy test for those people who don’t take drugs and don’t throw fits about it
To get accurate results the test must be done in a viewing booth that administers natural daylight as closely as possible . Also the disks must be replaced every two years to prevent loss of color saturation that could affect outcomes. On the bottom of each disk is a number to help the doctor score the results of the person being tested. The test can either tell if the participant is color blind or not