对考虑被分析元素的性质，结合背景强度来确定酸度

不妨试试加内标

脱氧管

FPD检测器对有机磷农药响应不错，甲胺磷可能会在衬管中吸附导致不出峰，氧乐果出峰也不是很理想。不知道你的升温程序怎么样。建议你找一个对硫磷的标准溶液，按照气相色谱的校准程序测试一下仪器的状态，然后再重新考虑是方法不合适，还是混合标准溶液有问题！？

是连续调的还是分级调的

不知道大致的含量，我这只能给你一个意见就是用偏硼酸锂熔解，酸提取，上原子吸收测定。

我分析时，在仪器上设置了背景校正，我做的标准曲线还可以，几个标准的背景都差不多，主要是标准的的背景强度和样品的背景强度有时错的很大，但是，测定的结果还可以，与我们自己的AA测定的，上海计量院等大型分析测定中心检测的结果都在误差范围之内。再者，我觉得做ICP分析，对谱线分析也很重要

Line Selection The first step in line selection is to simply choose the line(s) that meet the sensitivity requirements for your measurement. More than one line may be necessary due to spectral interferences.Sensitivity: Make sure that the line is not too sensitive (i.e. - going outside the linear working range). Dilutions are easy and hopefully you'll have more than one line that meets your lower limit of detection and quantitative measurement requirements. If you do not have line tables, we have listed the three most popular lines for each element (also included are detection limits for radial and axial view, as well as major interferences) in our Analytical Periodic Table.Precision: The precision of an ICP measurement is a function of many factors that are beyond our control. However, if you require an improvement in precision, consider the following:Try to keep the analyte concentration well within the linear working range. When the concentration falls 100 times the detection limit, the precision begins to fall.Avoid lines requiring spectral correction.Avoid lines that are in spectrally complex regions requiring sophisticated background correction algorithms.Increasing the integration time to as high as 5 seconds should improve the precision. It should not be increased any higher.Use an all glass introduction system including a glass concentric nebulizer. Your washout times will improve along with your precision.Be weary of salting out effects when analyzing high salt containing solutions, but do not use high solids nebulizers unless necessary.If your samples and standards have the same background then you should skip background correction.If the matrices of the samples and standards can be matched then eliminate the peristaltic pump and go 'free flow'. The pump introduces pulsing and the pump tubing stretches, causing the introduction rate to gradually change. If you can avoid the pump then make sure the liquid levels of your samples and standards are the same.NOTE:? Slight differences in hydrostatic pressure will make a difference.Do not begin the measurement unless the instrument has been allowed to warm up for at least an hour. Additionally, working in a temperature-controlled atmosphere is very advantageous.Clean your introduction system and replace the tubing when a) you notice an increase in precision when using glass introduction systems, b) you notice a 'bend or crink' in the Teflon tubing, c) the torch begins to build up residue.

很简单的一句话,就是通过元素灵敏线或其他线的出峰情况来判断元素的有无

标液、仪器状态、可以自己先准备一些样品进行预实验，看下效果如何

20769是浓缩10倍的，0.58?10=5.8，5.8这个点能落在标曲范围内就行了，标准的那个混合标准溶液是单点法用的

氧乐果对色谱柱的要求较高，尤其是柱前头的洁净程度

rfli2000 不必客气。

说说你的理由先

再发展，应该是类似扫描仪，对着蔬菜扫描，直接出结果。

这个电子版应该与正式的电子版差不多。

有网友问：氨基甲酸酯的原始记录模板有吗？有的话方便给我发一下吗？

你要考虑干扰

我设置了正负0.2min，有很多峰没扫完全，定量时无法定量。

问一下搞中药的朋友先。

回收率是反应待测物在样品分析过程中的损失的程度，损失越少，回收率越高，如果样品加标后理论浓度为1毫克/升，而测定为0.99毫克/升，就是说你的回收率是99％

.

没什么不同

灵敏度达到这要求的情况下稀释

今天晚上发给你，耐心等待

对了,那些值的单位是什么啊?100 mg是指100mg/L还是

没有,就只是说用单点扣背景法扣除背景.我不敢确定是什么意思!

没做过，要根据你的经验来实验。

少有少的做法，多有多的做法，向高手求救！

我和你同行，不过我觉得这么高的金用ICP测定的准确性不是太好，这东西太贵重了，我曾做过汗70%左右的，和火试金能差1%左右，