Table 2.

Degradation of bisphenol A (BD) and its metabolites (MD) as measured by the TOC Handai (TOC) and the Sea die-away (SDA) methods and monitored by HPLC.

	December 2005				January 2006a			October 2006
	TOC		SDA		TOC	SDA		TOC		SDA
	BD	MD	BD	MD	BD	BD	MD	BD	MD	BD	MD
N1	−	nd	+++	+++	−	−	nd	−	nd	+++	+++
N2	−	nd	+++	+++	−	−	nd	−	nd	+++	+++
S1	−	nd	+++	nd	−	+++	−(42)	++(33)	++(36)	+++	++
S2	+++	−	+++	nd	−	+++	+++	−	nd	+++	++

Results for a 30 days period and day of degradation, if occurred within 60 days after sampling, as numbers in brackets.

⁺⁺⁺complete degradation (> 90%)

⁺⁺degradation (50 to 90%)

⁺little degradation (10 to 50%)

⁻no degradation (< 10%)

^ndnot detected

^NNorth port samples 1, 2

^SSouth port samples 1, 2

^aNo metabolites detected in TOC method