ScholarLens Back to search
2004•Rock and Mineral AnalysisRequires access

The Chromogenic Reaction of 6-nitro-2-benzothiazolyl- diazoaminoazobenzene with Copper and Its Application

Yun‐Fa Zheng

Open publisher page 0 citations

Abstract

The chromogenic reaction of 6-nitro-2-benzothiazolyldiazoaminoazobenzene with copper and its application have been discussed in this paper. In the buffer solution of Na_(2)B_(4)O_(7)-NaOH (pH 10.0～12.0) and with the existence of surface active agent of Triton X-100, 6-nitro-2-benzothiazolyldiazoaminoazobenzene reacts with copper to form a red complex with molar ratio of Cu~(2+)∶NBTDAA=1∶2. The absorption maximum of the complex lies at 535 nm with an apparent molar absorptivity of 1.42×10~(5) L·mol~(-1)·cm~(-1).The Beer's law is obeyed in the concentration rang of 0～400 μg /L for copper.The method has been applied to the determination of trace copper in aluminium alloys and copper ores. The results are in agreement with those determined by AAS with precision of3%RSD(n=6).

About this research paper

What this paper is about

The chromogenic reaction of 6-nitro-2-benzothiazolyldiazoaminoazobenzene with copper and its application have been discussed in this paper. In the buffer solution of Na_(2)B_(4)O_(7)-NaOH (pH 10.0～12.0) and with the existence of surface active agent of Triton X-100, 6-nitro-2-benzothiazolyldiazoaminoazobenzene reacts with copper to form a red complex with molar ratio of Cu~(2+)∶NBTDAA=1∶2. The absorption maximum of the complex lies at 535 nm with an apparent molar absorptivity of 1.42×10~(5) L·mol~(-1)·cm~(-1).The Beer's law is obeyed in the concentration rang of 0～400 μg /L for copper.The method has been applied to the determination of trace copper in aluminium alloys and copper ores. The results are in agreement with those determined by AAS with precision of3%RSD(n=6).

Why it matters

A significance statement is not available in the OpenAlex record.

Key contribution

A contribution statement is not available in the OpenAlex record.

Method / approach

Method details are not available in the OpenAlex metadata.

Main findings

Findings are not separately available in the OpenAlex metadata.

Limitations

Limitations are not available in the OpenAlex metadata.

Applications

Application details are not available in the OpenAlex metadata.

Available abstract

The chromogenic reaction of 6-nitro-2-benzothiazolyldiazoaminoazobenzene with copper and its application have been discussed in this paper. In the buffer solution of Na_(2)B_(4)O_(7)-NaOH (pH 10.0～12.0) and with the existence of surface active agent of Triton X-100, 6-nitro-2-benzothiazolyldiazoaminoazobenzene reacts with copper to form a red complex with molar ratio of Cu~(2+)∶NBTDAA=1∶2. The absorption maximum of the complex lies at 535 nm with an apparent molar absorptivity of 1.42×10~(5) L·mol~(-1)·cm~(-1).The Beer's law is obeyed in the concentration rang of 0～400 μg /L for copper.The method has been applied to the determination of trace copper in aluminium alloys and copper ores. The results are in agreement with those determined by AAS with precision of3%RSD(n=6).

Key concepts: Chromogenic, Copper, Molar absorptivity, Chemistry, Nitro, Color reaction, Absorption (acoustics), Buffer solution

Related papers

Related paper 1Related paper 2Related paper 3
Back to paper searchBrowse research topicsOriginal source
The Chromogenic Reaction of 6-nitro-2-benzothiazolyl- diazoaminoazobenzene with Copper and Its Application — Research Paper | ScholarLens