NURSING EXAM QUESTIONS
TOXICOLOGY
|
Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
|
Confirmatory test to distinguish between thallium and copper:
|
|
x-ray diffraction
|
|
|
emission spectroscopy
|
|
|
thin layer chromatography
|
|
|
ion mobile spectroscopy
|
Explanation:
Detailed explanation-1: -9. Test for Bi3+: To five drops of the supernatant solution from Step 7, add three drops of 6 M NaOH followed by a small amount of SnCl2. Formation of a black precipitate confirms the presence of Bi3+.
Detailed explanation-2: -The classical Reinsch test is an adequate presumptive procedure to indicate whether or not heavy metals are present in biological samples. The procedure is based on the fact that copper will be displaced by elements below it in the electrochemical series.
Detailed explanation-3: -The method, which is sensitive to antimony, arsenic, bismuth, selenium, thallium and mercury, was discovered by Hugo Reinsch in 1841.
There is 1 question to complete.