样品称样量太少，会导致样品不均匀。

甲胺磷比乙酰甲胺磷容易检测

有需求就有市场。用户多了，价格就会降下来。

举例详细计算公式

脱水蔬菜在农残前处理中要先用适量水泡开，然后再提取等比较准确，计算应该还是按干品算的吧。

在签订委托合同或者制定检测方案的时候就指定了判定依据！

山东商检农残检测室，她们在做标准曲线时，就有一点是用不含标样的纯溶剂进样，以此点为零点做标准曲线。

可以不用点火,多浪费气啊

不是,普通的进样系统

银铜铁的净信号比在盐酸介质中降低,而锑铋铅的几乎没什么变化,除非纳离子浓度特别大才回降低的,不过所有的背景都高了不少

有的仪器可以用汞灯不点火校正。另一些仪器需要开机点火做溶液进行校正。欢迎补充。

应该不会吧，扫描的时候已经定好波长位置了。我的扫描前有个寻峰的过程，不知道你们的怎么样？

因为不知道仪器具体型号,所以无言可谈!!!!!!

请问一下有没有一种同时测定Pb,Cr.Cd.Zn.Cu的消解方法

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.

是放在玻璃杯里

我的5300DV已经使用了二月多，可能是大陆最先到货的。我不知道你要问什么？仪器验收有两个：一个是出厂指标验收，有安装工程师完成，另一个是合同验收，就是你要求的指标，一般由应用工程师完成。验收所用的溶液是PE自己的。不管是什么型号，终归是ICP-OES,反正就那些指标，当然你可以重点考察那些你所关注的。

都没有说是测什么样品，怎么就是讨论要不要消解啊？如果是金属样品，可以用直读光谱测试，直接测（只需要样品有一个平面，需要打磨），准确度高。或者用XRF测试，精度较差。如果是非金属，你只能用XRF了。关键是看你的检测要求，对精度的要求是什么？如果要求较高，那还是只有消解一途。

是这个标准吧如果标准曲线都没有做出来,还是要找找试剂和标准溶液的原因了

如此高的含量,这样的数据已经不错了,很正常啊你工作曲线用多高浓度的点?做了几点?