Cr3+ được xác định bằng hiệu số của

Cr3+ được xác định bằng hiệu số của Crom tổng trừ đi hàm lượng Cr6+ đo được
Mẫu sau khi được xử lý thì cho crom (VI) phản ứng với 1,5- diphenylcacbazid để tạo phức crom- 1,5- diphenylcacbazon có mầu tím đỏ. Đo độ hấp thụ của phức này ở bước sóng 540 nm

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CR3 + is determined by subtracting the number of total Chromium Cr6 + concentrations measured wasModeled after the processing for chromium (VI) react with 1.5-diphenylcacbazid to create complex chromium-1.5-diphenylcacbazon has purple-red color. Measure the absorbance of this complex at 540 nm wavelength

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Cr3 + is determined by the difference of total chromium content of Cr6 + minus measured
after treatment form is for chromium (VI) react with complexing crom- 1.5- to 1.5- diphenylcacbazid with purple diphenylcacbazon dirty. Measuring the absorbance of this complex at 540 nm wavelength

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Cr3+đượC XáCđịNH Bằng嗨ệU SốCủ一他Tổng Trừđ我àM Lượng Cr6+đOđượC我ẫU秀川崎đượC XửLý日ìCHO克罗姆（VI）pHảNứng Vớ我1,5 - diphenylcacbazidđểạO T C pHứ克罗姆- 1,5 - diphenylcacbazon CóMầU TíMđỏ。ĐOđộHấpụCủpHứC NàYởBướC的óNG 540 nm

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