Katherine Sp

6 Questions 8 Answers 0 Followers

Questions related from Katherine Sp

Why is PFOS listed in Annex B of Stockholm convention and PFOA listed in Annex A despite studies showing that PFOS is more toxic than PFOA ?

27 March 2023 5,324 0 View

If std procedures are used to measure the incipient LC50 for diff. species of fish will there still be a large variability in toxicity data?

If the standard procedures are used to measure the incipient LC50 for different species of fish will there still be a large variability in toxicity data? The LC50 steady state is proportional to...

16 February 2023 1,023 1 View

Can we use the critical body residue equation CBR = LC50(96hr) x BCF for chemicals that do not reach steady state in 96hrs?

CBR = Critical body residue The mathematical equation CBR = LC50 x BCF(bio concentration factor). Usually, when using this equation the duration of the LC50 and BCF should be matched. However,...

06 February 2023 1,011 0 View

What is steady state LC50?

I am trying to understand what steady state LC50 is. I read that steady state LC50 or otherwise called incipient LC50 is the concentration below which 50% of the individuals survive indefinitely....

27 January 2023 6,507 2 View

Is there a way to find the moisture content of sediment if we know the pore size and the total organic carbon conten of the sedimentt?

Is there a way to find the moisture content of sediment if we know the average grain size and the total organic carbon content? I am trying to convert chemical concentration in the sediment from...

12 January 2023 2,534 5 View

Protein content and phospholipid content of fish?

Could someone send me data on the protein content and phospholipid content in fish? I am trying to check if normalization of bioconcentration factors using these will help reduce variability in...

17 December 2022 7,479 6 View