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Role of Forensic Chemist in crime investigation
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Physical evidence then and now:
In my personal opinion I do believe that physical evidence has increased in importance over the last days, weeks, years, several decades, and even several centuries. The reason I say this is because advancements made in technology compared to tech back then was when only looked at the physical wounds. They would give the obvious guesses in what physically happened to the victim. So if someone were to be poisoned no one would know unless the poison provoked a certain reaction to the body like for example the poison Cleopatra used on his husband was probably: belladonna, henbane, and the strychnine tree's seed which was the most accessible at that time. There are many other theories. However these seem to be the most logical poisons since…
Belladonna: Causes narcosis and paralysis.
Henbane: Hallucinations, dilated pupils, restlessness, and flushed skin. Other effects are tachycardia, convulsions, vomiting, hypertension, hyperpyrexia, and ataxia.
Strychnine: 1ST symptoms sometimes show up as muscle spasms. Appear very quickly after inhalation or injection, within a few minutes to be precise. With a very high dose, there is respiratory failure and death may happen between 15 to 30 mins. If there is a lower dose symptoms are different.
This involves seizures, cramping, stiffness, hyper vigilance, plus agitation
Can
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Only one must eat the poison. Either Alexandra or Leo, it’s a tough choice. This kind of poison I believe may be either the strong poison Ricina or Arsenic poisoning. Closest guess. Since this is a dramatized series. Besides based on time, place and country poisons are different. And this poison is unknown. If Suleiman or any doctor of that time were to have done a forensic work on the man they can obvious say it was
When Hae Min Lee disappeared on January 13, 1999, all of her friends (including the subsequently charged killer, Adnan Syed) thought that she moved to California. Hae’s body turned up a few weeks later on February 9, and the police later charged Adnan Syed, her ex-boyfriend with her murder. Jay Wilds, an alleged accomplice to the crime, confessed to the police that he knew that Adnan killed Hae and Adnan tasked him with burying her. The state later used Jay’s testimony as the foundation for their case, even though it contradicted some of the state’s own physical evidence. While Jay’s eyewitness testimony does identify Adnan Syed as Hae Lee’s murderer, it is self-serving and inconsistent, with no physical evidence to corroborate it. Therefore,
Nyquil has many side effects when miss used or when recommended dosage is exceeded. The consumer is not to use this product with any other products containing acetaminophen. Nervousness, dizziness, and sleeplessness are all side effects of this product. It causes drowsiness and can cause excitability in children. This is not to be taken if you have heart disease, asthma, emphysema, thyroid disease, diabetes, glaucoma, high blood pressure, breathing problems, excessive phlegm (mucus), chronic bronchitis, persistent or chronic cough, cough associated with smoking, and difficulty in urination due to enlargement of the prostate gland. Nyquil is also not to be taken if you consume more then 3 alcoholic drinks every day. Acetaminophen may cause serious liver damage.
After Monte Cristo makes a commitment to Madame de Villefort he remains, “ faithful to his promise, he sends the prescription (poison) Mme de Villefort had requested” ( Dumas 302). Shortly after Monte Cristo and Madame de Villefort finish their discussion about the poison and how it is very harmful in large doses, characters start to die. They do not die from natural causes as the doctor begins to think, but they are murdered. As D’Avrigny is interacting with Nortier, he asks about Barrois death. He wants to know, “ Do you think the poison was intended for him?” “No” “Now do you think the same hand that struck Barrois in mistake for someone else has to-day struck Valentine?” Yes” ( Dumas 521). This quote not only foreshadows that the assassin was Madame de Villefort, but that the poison was meant for him, Nortier. Madame de Villefort wants Valentine dead and out of the picture, if Valentine is dead, then Edward, Madame de Villefort's blood son, will get all the inheritance from Noriter. This is all the Madame de Villefort is worried about. On the other hand, Villefort wants Valentine to marry Franz and if she doesn’t marry Franz, she will get the inheritance. The marriage is out of the picture, so the only left for Madame de Villefort to do is kill Valentine. Which she attempts to do, and she almost succeeds. Nortier ruined her plans but having Valentine build up a tolerance to the venom. To sum it all up,Madame de Villefort is the assassin that has been killing everyone in their household by the toxin Monte Cristo provided her
Even though Romeo was not a husband when he drank the poison, he still abused himself, resulting in him dying next to his beloved Juliet.
Through the experiment, it has been confirmed that the victim's last meal was at Avanti's Restaurant. In order to distinguish the possible macromolecules that the victim had ingested before the death, the four experiments were held- lipid test, protein test, glucose test, and starch test.
Extreme gasping and muscle spasms can occur. While losing consciousness, a person can vomit and then inhale the vomit. Panic, feelings of terror and assaultive behavior take place from the drug-induced confusion. Other problems can include difficulty in taking the drugs, failure of the drugs to induce unconsciousness and a number of days elapsing before death occurs. (NEJM)
Crime scenes are known to have many clues left behind. The obvious would be a the body or bodies, clothing, and sometimes even the murder weapon. While these are great way to solve a case there's another kind of evidence; trace evidence. Trace evidence are small pieces of evidence that are laying around a crime scene. There are many types of trace evidence some of them include metal filings, plastic fragments, gunshot residue, glass fragments, feathers, food stains, building materials, lubricants, fingernail scrapings, pollens and spores, cosmetics, chemicals, paper fibers and sawdust, human and animal hairs, plant and vegetable fibers, blood and other body fluids, asphalt or tar, vegetable fats and oils, dusts and other airborne particles, insulation, textile fibers, soot, soils and mineral grains, and explosive residues. Although these are the most common found elements, they are not the only ones. The Trace Evidence Unit is known to examine the largest variety of evidence types and used the biggest range of analytical methods of any unit. materials are compared with standards or knowns samples to determine whether or not they share any common characteristics. In this paper I will discuss the different kinds of trace evidence and how crime scene investigaros use it to solve cases and convict criminal.
On the night of January 13, 2013, Jeffrey Wright was killed after causing his wife, Susan Wright, years of distress and abuse. His body was disfigured after being stabbed approximately 193 times. The body lay on his former mattress which had become blood-soaked and cut up. Attached to his wrists are ties which had been used to anchor him to the bed, making him unable to escape. His last visual memory was the sight of his wife hovering over him with a knife, wondering how she had been able to do what she was about to do. How could she, his wife, betray him and kill him with no remorse?
Females frequently use less obvious means of murder than their male counterparts. The most common choice amongst the females happens to be poison, which is utilized in approximately 32% of their killings. These poisons include arsenic, potassium chloride, and succinylcholine (Holmes and Holmes 38-41). In the case of Velma Barfield, several people in close contact with her perished (Eddy). After her last victim 's autopsy indicated arsenic poisoning, she admitted to the other murders she had committed
Even though doctors know everything when it comes to medications and what is considered poisonous to the body. Back then, a doctor could possibly have access to poisons that was undetectable in the human body. Certain poisons could not be found in the blood of a corpse even if that was the source of death. For example, in the story Doctor Roylott played his innocence the entire time when the crime was about. He made it seem like he was clueless just like everyone else, because no one
Signs and symptoms that the patient will be different for every person. Common symptoms are “anxiety, restlessness, chest pain, difficulty breathing, pale, gray or blue skin” (Health Guide, 2017), low blood pressure and decreased urine output.
Standard procedures in the handling of physical evidence is a crucial factor in the criminal trial process. Any deviation from standard operating procedures in the handling of physical evidence can affect the outcome of a trial. Physical evidence is described by the Oxford Reference - A Dictionary of Forensic Science as: any type of tangible evidence as opposed to something such as the testimony of an eyewitness. Physical evidence can be anything that is capable of being perceived by touch. It can be as minute as a piece of dust, or as large as a car. Physical evidence must be preserved, documented, collected, marked, transported, and stored in a way that preserves the integrity of the particular type of evidence. It is subjected to a chain
Higher amount of serotonin should also be checked and monitored every interval of time, when using hypericum with SSRIs, tryptophan, or 5-hydroxytryphan. Symptoms of “serotonin syndrome ‘’ can be due to more uses of this particular extract, as per U.S. Food and Drug Administration, It is as a result of overcapacity of serotonin on the (CNS) central nervous system and (PNS) peripheral nervous system .Some researchers says it is also called serotonin toxicity or serotonin toxidrome which more precisely reveals that it is a type of poisoning. There are some other names for it which comprises of serotonin sickness, serotonin storm, serotonin poisoning, hyperserotonemia, or serotonergic
Some of the things that the person may experience are auditory, olfactory, or tactile hallucinations, ventricular ectopics, tachycardia, hypertension, or cocaine fever which is characterized by increased body temperature and a higher-than-normal respiratory rate. In severe cases, myocardial ischemia or infarction may occur as the result of coronary artery spasms – even if the patient shows no abnormalities in their coronary arteries. Other potential risks for using deliriants are hemorrhagic strokes due to hypertension, hypotension, cyanosis, cardiac arrhythmias, or renal failure. The high slowly affects the body as it progresses, the user will begin to lose control of their body; convulsions, inhibition of coordination skills, and twitching
The most lethal asphyxiants that cause asphyxia are Carbon Monoxide, Hydrogen Cyanide, and Hydrogen Sulfide. They alter the utilization and transportation of oxygen to the brain cells (Borron, & Bebarta, 2015). The chemical process that leads to this complication is the combination of these chemicals with the mitochondrial cytochrome thus causing oxidation. According to Borron, & Bebarta, (2015), respiration at the cellular level is interrupted by the oxidation process while the carbon monoxide mixes with hemoglobin thus blocking the delivery of oxygen to the brain cells and tissues. The chemicals are recognized to be volatile and in the case of high concentrations, they may cause the victim to feel weak, lose consciousness, and experience seizures and tachypnea. If victims are removed from the chemicals immediately, recovery is possible. Between 10- 20 minutes after the victim has suffered from the inhalation of the chemical asphyxiants, specific antidotes such as sodium thiosulfate and nitrates can be