一般没写有效期，可以自己化验一下成分看有没有过期

是100mg/L的标准溶液的Si元素是存在NaOH溶液中的.应该关系不大，因为配制时已加入酸应该是受高盐钠离子影响

除了仪器的问题，也要检查一下前处理过程有没有污染，进样针之间有没有交叉污染

估计买安捷伦的可能性较大,不过7890的价位大概是多少?

我们用瓦里安的仪器，预热的时候可以不开气不过不开气，仪器不会进行吹扫使用之前要提前开气进行吹扫，大约需要20多分钟

我用的时候总是炉丝断，都是自己接接的，电炉一般都那样，可以考虑更换成电磁炉，呵呵

先还瓶气体看看

改用 aas试试就知道了

标准偏差不是测完了就自动显示的吧

反正我们单位是每年都有参加能力验证的

你的进样系统做过维护吗

铁的谱线为什么那么多啊

可以调节一下观测高度和功率

材料研究所标样部问问看

这么低浓度的样品不适合用ICP测.考虑石墨炉或ICP-MS.

如果用内标法、外标法，可重做标准曲线.

标准限量要求多在8-90mg/kg之间,实际样品测试中,基本没乍么检出

ms的问题去质谱区问撒。这是icp光谱区。。。。

先洗洗看。。

1.做甲醇外标曲线时最好准确配制，用甲醇试剂瓶中的甲醇饱和蒸气会受很多因素的影响，导致曲线线性不好。2.老化下柱子，再试试。

Knowledge Article from www.Key-to-Steel.comSilicon Steels and Their ApplicationsPrintable Version Abstract: Silicon steel is undoubtedly the most important soft magnetic material in use today. Applications vary in quantities from the few ounces used in small relays or pulse transformers to tons used in generators, motors, and transformers. Continued growth in electrical power generation has required development of better steels to decrease wasteful dissipation of energy (as heat) in electrical apparatus and to minimize the physical dimensions of the increasingly powerful equipment now demanded.? Silicon steel is undoubtedly the most important soft magnetic material in use today. Applications vary in quantities from the few ounces used in small relays or pulse transformers to tons used in generators, motors, and transformers. Continued growth in electrical power generation has required development of better steels to decrease wasteful dissipation of energy (as heat) in electrical apparatus and to minimize the physical dimensions of the increasingly powerful equipment now demanded.The earliest soft magnetic material was iron, which contained many impurities. Researchers found that the addition of silicon increased resistivity, decreased hysteresis loss, increased permeability, and virtually eliminated aging.Substantial quantities of oriented steel are used, mainly in power and distribution transformers. However, it has not supplanted nonoriented silicon steel, which is used extensively where a low-cost, low-loss material is needed, particularly in rotating equipment. Mention should also be made of the relay steels, used widely in relays, armatures, and solenoids. Relay steels contain 1.25 to 2.5% Si, and are used in direct current applications because of better permeability, lower coercive force, and freedom from aging.

那要看你测试什么元素和元素的含量大概范围是多少

这们高含量的硅还是用重量法测得准确.

一般厂家会帮你设置的呀，而且没说清楚是要测什么样品呢。

微量进样器和进样垫那是经常更换的耗材。还有石英玻璃汽化管，在超声清洗和安装时不经意间就磕碰掉很小一块，半年时间三根都有损伤了，还是只有买新的。

都是耐HF酸炬管了就不用赶HF了.

我的也是这个型号，也出现过这个问题，请工程师过来修的，换了部件

会不会是取的有效数字位数不一样造成的差异？

直接找厂家，如果换成FID检测器的话，气路上可能还要做一些改动

樓上的說法很科學！