Trace Metals Terms

Question 1

A metal that has a high atomic weight with a specific gravity that exceeds the specific gravity of water by five or more times at 4° C and may include Trace Metals of a Public Health Concern including Hg, Pb, As, Cd and Cr is the definition for?

Answer 1

Heavy Metals

Question 2

What are trace metals?

Answer 2

metals that occur naturally in trace concentration within the crust of the Earth

Question 3

What are Hyperactivity Syndrome and/or Overt Aggressiveness ?

Answer 3

brain effects of Pb trace metal exposure in humans and rats. In humans this leads to learning disorders.

Question 4

What is methyl mercury?

Answer 4

most toxic form of Hg

Question 5

What is Sulfhydryl Groups on Amino Acids

Answer 5

active sites on proteins in which Hg outcompetes the Sulfur for binding, leading to Hg preferentially binding with proteins that are inactivated as a result

Question 6

What is Minamata Bay

Answer 6

a fishing village which was the location of major human Hg Poisoning in Japan

Question 7

What is the annual economic impact of Hg in the US?

Answer 7

> $2<$44 Billion/Year

Question 8

– gasoline which contained Pb as an octane booster additive which resulted in major Pb contamination along roadways in the US.

Answer 8

Leaded Gasoline

Question 9

name given to Pb Paint Chips which taste sweet and may be consumed by toddlers/infants leading to childhood Pb poisoning

Answer 9

PICA

Question 10

an enzyme that catalyzes the formation of hemoglobin (heme + globin protein) which is adversely affected by Pb exposure resulting in anemia

Answer 10

-Ferrochelatase

Question 11

wrist drop which is a condition in industrial workers excessively exposed to Pb in which they lose muscle control over the wrist, resulting in the wrist drooping

Answer 11

Pb Palsy

Question 12

damage to the kidney caused by trace metals such as Pb and Cd

Answer 12

-Nephritis

Question 13

Antidote for Adult Pb Exposure

Answer 13

Ca-EDTA

Question 14

• Antidote for Inorganic Hg

Answer 14

• Dimercaptopropanol

Question 15

Antidote for Organic Hg

Answer 15

Pennicillamine

Question 16

Ouch Ouch Disease caused by Cd exposure in Japan

Answer 16

-“Itai-Itai” disease

Question 17

protein biomarkers induced by trace metal exposure which act to remove trace metals from blood into the kidney, where they are either stored or excreted.

Answer 17

• Metallothioneins

Question 18

particle < 1 micron in size that may be used for new product development and are a new class of pollution which may be preferentially taken up by deposit feeders such as clams

Answer 18

Nanomaterials