congo blue

The results indicated that ZJ-6 can remove more than 90% of the color of Methyl Orange, about 85% of the color of Congo Red and Methylene Blue, about 70% of the color of Crystal Violet.

试验结果表明，ZJ-6对甲基橙的脱色效率超过90%，对刚果红和次甲基蓝脱色效率达85%左右，对结晶紫的脱色效率在70%左右。

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Their adsorption performance towards selected pollutants like as Congo red, methyl blue, and phenol was evaluated too.

并研究了所有样品对污染物刚果红、甲基蓝、苯酚的吸附性能。

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The oxalic acid was cauterize in the muffle at 200 ℃ until fully volatilized. The solution pH was adjusted with drop ( 1+ 1) hydrochloric acid ( the congo red test paper change color from red to blue) to about 4 to remove carbon dioxide.

在马弗炉（200℃）灼烧至草酸全部挥发，滴加（1+1）盐酸，使刚果红试纸由红变蓝色（或调节pH到4左右），除去二氧化碳。

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They were positive for Congo red, Alcian blue, and periodic acid Schiff ( PAS) stains.

组织化学染色刚果红、阿森蓝及PAS均阳性。

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