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盐碘
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  salt iodine
    Comparison of the Effect Between Direct Titration Bromine As KI Oxidant to Examine Salt Iodine
    直接滴定法与溴氧化法检测盐碘浓度对比分析
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  “盐碘”译为未确定词的双语例句
    A new dye Trans -4-[p -(pyrrolidinyl)styryl]-N -methylpyridinium iodide(PSPI )was synthesized,and the two -photon absorption(TPA),TPA -induced frequency up -convers ion emission,and two -photon pumped(TPP)frequency up -converted superradia tion properties of this new dye were experimentally studied.
    合成了一种染料反式-4-犤对-(吡啶咯烷基)苯乙烯基犦-N-甲基吡啶盐碘(PSPI)。 实验研究了这种新化合物的双光子吸收,双光子吸收引起的频率上转换发射,双光子泵浦的上转换超辐射性质。
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  salt iodine
Salt iodine content could not be done due to non-availability of kit.
      


A new dye Trans -4-[p -(pyrrolidinyl)styryl]-N -methylpyridinium iodide(PSPI )was synthesized,and the two -photon absorption(TPA),TPA -induced frequency up -convers ion emission,and two -photon pumped(TPP)frequency up -converted superradia tion properties of this new dye were experimentally studied.This new dye has a moderate TPA cross -section ofσ2=5.7×10-48cm4·s /photon at 1064nm,but exhibits a high superradiation efficiency.The overall conversion efficiency is as high as 16.8%at the pump energy level of 2.02mJ....

A new dye Trans -4-[p -(pyrrolidinyl)styryl]-N -methylpyridinium iodide(PSPI )was synthesized,and the two -photon absorption(TPA),TPA -induced frequency up -convers ion emission,and two -photon pumped(TPP)frequency up -converted superradia tion properties of this new dye were experimentally studied.This new dye has a moderate TPA cross -section ofσ2=5.7×10-48cm4·s /photon at 1064nm,but exhibits a high superradiation efficiency.The overall conversion efficiency is as high as 16.8%at the pump energy level of 2.02mJ.

合成了一种染料反式-4-犤对-(吡啶咯烷基)苯乙烯基犦-N-甲基吡啶盐碘(PSPI)。实验研究了这种新化合物的双光子吸收,双光子吸收引起的频率上转换发射,双光子泵浦的上转换超辐射性质。化合物在1064nm处具有中等大小的双光子吸收截面σ=5.7×10-48cm4·s/photon,但具有很高的超辐射效率。当泵浦能量为2.02mJ时总的转换效率高达16.8%。

Objective To analyse the concentration of Sichuan iodized salt by direct titration and bromine as KI oxidant.and provide the evidence for definition of Sichuan iodized salt detection.Methods Samples were collected from two factories (A and B)by LQAS method and were detected by direct titration and bromine as KI oxidant.the average and frequency of the samples were compared.Results The difference of factory A was significant by two methods.The result of direct titration was significant lower than bromine as...

Objective To analyse the concentration of Sichuan iodized salt by direct titration and bromine as KI oxidant.and provide the evidence for definition of Sichuan iodized salt detection.Methods Samples were collected from two factories (A and B)by LQAS method and were detected by direct titration and bromine as KI oxidant.the average and frequency of the samples were compared.Results The difference of factory A was significant by two methods.The result of direct titration was significant lower than bromine as KI oxidant.The difference of the average by two methods is 24 04 mg/kg(P<0 001).The difference of the lowest is 23 52 mg/kg and the highest is 21 75 mg/kg by two methods.The frequency of samples had significant difference.Conclusions It is suitable that to select bromine as KI oxidant to detect concentration of Sichuan iodized salt.

目的 对比分析直接滴定法与溴氧化法检测四川生产碘盐的浓度差异 ,为“川盐”碘浓度检测方法的确定提供依据。方法 按照LQAS法分别采集自贡 2个盐厂 (A厂和B厂 )碘盐及非碘盐样品 ,同时用直接滴定法与溴氧化法检测 ,比较均值、频数分布的差异。结果 A厂碘盐浓度 ,直接滴定法检测结果明显低于溴氧化法 ,2者均值相差2 4 0 4mg/kg (P <0 0 0 1) ,最低值相差 2 3 5 2mg/kg ,最高值相差 2 1 75mg/kg ,频数分布也呈明显差异。 2种方法检测B厂碘盐浓度差异无显著性意义。结论 对于“川盐”碘浓度的检测 ,以溴氧化法作为检测方法并据之作为判定依据较为合适。

A method for the determination of iodine in iodized salt by gas chromatography was reported in this paper.The linear range of the method was 0~100μg/L,the detection limit was 3μg/L,the recoveries were between 97.7%~102.7% and the RSDs were 4.25%(25μg/L)and 2.19%(70μg/L).The method was simple,rapid and reliable.

研究了气相色谱法测定盐碘的方法,方法的线性范围为0~100μg/L,检测限为3μg/L,盐样添加回收率为97.7%~102.7%,相对标准偏差为4.25%(25μg/L)、2.19%(70μg/L)。方法操作简便,快速,可靠。

 
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