showed a trendP > 0.05
1 (b), the DS1 value significantly increased with the increase of hydrochloric acid concentration ( P < 0.05), while the DS2 value showed a trend of slowly increase ( P > 0.05).
1 (b), the DS1 value significantly increased with the increase of hydrochloric acid concentration ( P < 0.05), while the DS2 value showed a trend of slowly increase ( P > 0.05).