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. 2019 Feb 27;9(3):209–216. doi: 10.1016/j.jpha.2019.02.003

Table 1.

Chemical composition of CDs determined by the Kjeldahl method for N and by XRF analysis for the other elements.

Element Weight (%)
C 85.22
N 8.83
O 4.80
S 0.33
Others (Cl, K, Si, P, Ca and Fe) 0.82