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"experimental principle"
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2
3
5
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0.5
1.0
4.0
4.0
3.5
" 3.0
2.5
2.0
take 0.1 ml each, set capacity to 25 ml, determine light density at 223nm
< >A 223
are the number of millimoles of sodium high iodide, the ordinate is the light density value, and the standard curve is drawn.