Lecture #8

Question 1

pCl

Answer 1

-concentration of Cl- ions -associated with salinity -lower pCl means more Cl- ions (1 is most, 5 is least)

Question 2

organic mercury graph

Answer 2

Question 3

inorganic mercury graph

Answer 3

Question 4

What is the mechanism by which pH affects speciation?

Answer 4

lower pH means more H+ present, attracts Cl- ions so there is less available Cl. This pushes the equilibrium from HgCl4 2- to HgCl2, as there is less Cl to react with the Hg

Question 5

the biological base for persistence consists of

Answer 5

uptake and elimination

1. diffusion across membranes
2. active transport
3. intracellular sequestration
4. porosity of capillaries
5. intracellular binding

Question 6

ADME

Answer 6

absorption, distribution, metabolism, excretion

(uptake and elimination but w/ more detail)