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[求助] 含重金属Ni的Ni-EDTA的降解溶液的液相色谱分析求助

测的液相色谱,样品是含重金属Ni的Ni-EDTA的降解溶液,里面有NaCl溶液,我分别取了降解开始与降解结束的液相色谱图,请问在1分多钟出的两个峰的大概是什么物质?我在文献中也没找到,与预想的实验结果不符,我做了标准曲线,主要的峰也与那两个峰相关,但中间有个别量误差很大,分不清到底是什么物质。望做过类似Ni-EDTA降解的老师不吝赐教。或者有什么好的检测条件可提供于我 @学术巨星

含重金属Ni的Ni-EDTA的降解溶液的液相色谱分析求助
bw223h27777479_1650530079_449.jpg


含重金属Ni的Ni-EDTA的降解溶液的液相色谱分析求助-1
bw223h27777479_1650530083_532.jpg
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