Sample preparation

HT Hai Tian
YF Yujie Feng
XY Xinfeng Yang
SL Shuhuai Li
CP Chaohai Pang
CM Chen Ma
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Take green tea sample 20 mL into 100 mL measuring cylinder, then add 4 g NaCl and 50 mL of acetone solution. thermal agitation after 3 min, room temperature let stand for 30 min, take 1 mL solution (dispersant), to be the next step.

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