. . "PIGNA591" . "PIGNA591" . "22-JAN-09" . "SPMPigAbs591" . "Light absorbance (591nm wavelength) by the suspended particulate material >GF/F [pigment phase] by filtration and spectrophotometry on residue before and after NaOCl bleaching and differencing of the measurements"@en . . "1" . . "PIGNA591" . "Unavailable" . "1" . "accepted" .