Arsenic Transfer from As-Rich Sediments to River Water in the Presence of Biofilms

Table 5

Speciation of intracellular As.

As (µg kg^−1)	As (µg kg^−1)	MMA (µg kg^−1)	DMA (µg kg^−1)	AsB (µg kg^−1)	As sp. (µg kg^−1)
1025.8	14.7	2.6	8.7	n.d.	1051.8

n.d.: not detectable. Detection limit for AsB: 2.5 ng L⁻¹.