The action begins in the home of Reverend Parris, whose daughter Betty lies unconscious and appears very ill. Around midnight the night before, Parris had discovered Betty, his niece Abigail, and Tituba, his black slave, dancing in the woods, causing Betty to swoon.
Applicable to urine, stomach contents and scene residues. Results A blue colour confirms iodide. Clinical interpretation Acute poisoning with iodine solutions may cause corrosion of the mucous membranes of the mouth, oesophagus and stomach, vomiting, diarrhoea and abdominal pain.
In severe cases, delirium, coma, circulatory collapse and acute renal failure may ensue. Absorption of as little as g of free iodine may cause death. Treatment is generally symptomatic and supportive. Starch may be administered to adsorb orally ingested iodine. Acute ingestion of iodide salts may cause angioedema, swelling of the larynx and cutaneous haemorrhages.
However, as with bromides, signs of toxicity are more likely to occur with chronic poisoning, and include the presence of a burning sensation in the mouth and throat, metallic taste, sore teeth and gums, hypersalivation, headache, pulmonary oedema, enlargement of the parotid and submaxillary glands, anorexia, diarrhoea, fever and depression.
Treatment is symptomatic and supportive. The minimum lethal dose of ferrous sulfate in an adult is of the order of 30 g, but 1 g may be dangerous in an infant. A green or blue colour in vomit or stomach contents suggests the presence of iron or copper salts. The qualitative test given below can be used to differentiate between ferrous and ferric iron and other metals, while the quantitative assay can be used to measure serum iron.
It is very important to avoid contamination when collecting blood for the measurement of serum iron concentrations; vigorous discharge of the sample through the syringe needle can cause sufficient haemolysis to invalidate the assay.
Qualitative test Applicable to stomach contents and scene residues. To a further 0.
Leave for 5 minutes at ambient temperature and centrifuge for 5 minutes. Results Deep blue precipitates with potassium ferricyanide step 1 and potassium ferrocyanide step 2 indicate the presence of ferrous and ferric iron, respectively.
Quantitative assay Applicable to unhaemolysed serum 2 ml. Aqueous sodium sulfite solution 0. Aqueous hydrochloric acid 0.
Standards Prepare aqueous solutions containing ferrous ion concentrations of 1. Mix 2 ml of sample, 2 ml of sodium sulfite solution and 2 ml of 2,2'-bipyridyl solution in a ml centrifuge tube with a ground- glass neck. Heat in a boiling water-bath for 5 minutes, cool and add 1 ml of chloroform.
Stopper, rotary-mix for 5 minutes and then centrifuge for 5 minutes. If an emulsion forms, vortex-mix for 30 seconds and repeat the centrifugation.
Remove the chloroform extract, filter through phase-separating filter-paper and measure the absorbance of the extract at nm against a reagent blank see section 4.
Results Construct a calibration graph of absorbance against ferrous iron concentration in the calibration standards and calculate the iron concentration in the sample.
This method should not be used if chelating agents such as deferoxamine have been given before the specimen was obtained, since the result may not be reliable. Clinical interpretation Acute poisoning with iron salts is extremely dangerous, especially in young children.
The absorbed iron may rapidly exceed the binding capacity of transferrin so that free iron accumulates in the blood. Rapid necrosis of the gastrointestinal mucosa may occur with haemorrhage and loss of electrolytes and fluid.
Treatment may include chelation therapy with deferoxamine, given intravenously or orally see Table 6. Normal serum iron concentrations are less than 1.
The serum iron concentration should be measured before and during chelation therapy, both to confirm the need for such treatment and to monitor efficacy. The principal metabolic reaction is acetylation, but other reactions include hydrolysis, conjugation with glycine and N-methylation. Serious toxicity may occur in adults with doses of 3 g.
The colorimetric procedure given below can be used to measure the plasma isoniazid concentration if overdosage with this drug is suspected. Quantitative assay Applicable to plasma or serum 2 ml.
Add 4 ml of purified water to 2 ml of sample and add 2 ml of dilute metaphosphoric acid. Vortex-mix for 30 seconds and allow to stand for 10 minutes. Centrifuge for 5 minutes and transfer 4 ml of the supernatant to a clean tube.
Add 2 ml of dilute acetic acid, 2 ml of sodium nitroprusside reagent and vortex-mix for 5 seconds. Allow to stand for 2 minutes and measure the absorbance at nm against a plasma blank see section 4. Results Prepare a calibration graph by analysis of the standard isoniazid solutions and calculate the isoniazid concentration in the sample.Discovery, Exploration, Colonies, & Revolution.
Updated July 3, JUMP TO.. TIMELINES & MAPS / PRIMARY DOCUMENTS. DISCOVERY & EXPLORATION. NATIVE AMERICANS & COLUMBIAN EXCHANGE. Vision The Erlanger-Elsmere Schools will provide essential opportunities for all students to reach their greatest potential.
Mission It is the mission of the Erlanger-Elsmere Schools to embrace and attend to the individual needs of our students, regardless of the obstacles. All images taken by Ben Hall, click pics for slidehow and orig size.
- Report & pics by living Legend Ben Hall (aka The Admiral) and sent by US Class Assoc. Recognition to the US A-AClass Assoc as they were indeed the first implementing the now called "Classic" rankings in the US.
Outline scheme of work for yr 9. Learning objectives and outcomes based on weekly lessons of minutes.
This scheme covers act 1, 2, and 3 only, and is preparation for pupils to stage their own extracts from one of these acts. The Crucible young adults, and until this strange crisis he, like the rest of Salem, never conceived that the children were anything but thankful for being permitted to walk straight, eyes slightly low-ered, arms at the sides, and mouths shut until bidden to speak.
His house stood in the town - but we today would hardly call it a village. Close the corporations! Sequester the supermarkets! Emotions can run high once you visit Brooklands, one of the most imposing and impressive pieces in the jigsaw of automotive history.
One visit to the track is all it takes to fall completely under its spell; several trips in and you’ll be a.