过硫酸钾（无氮）

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包邮满30000包邮

货品编号：

C26598-200g

品牌：

FU试剂

货号：
- C26598-200g

数量： -+

商品详情

品牌：FU试剂
所属分类：专用试剂
商品编号：C26598-200g

<p style="margin: 0cm 0cm 0.0001pt; text-indent: 30pt; line-height: 24pt; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">因应【HJ 636—2012水质 总氮的测定 碱性过硫酸钾消解紫外分光光度法】，检测水中总氮，国标要求：<o:p></o:p><p style="margin: 0cm 0cm 0.0001pt; line-height: 24pt; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">氮含量<0.0005%（5ppm）<o:p></o:p><p style="margin: 0cm 0cm 0.0001pt; line-height: 24pt; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">空白值<0.03<o:p></o:p><p style="margin: 0cm 0cm 0.0001pt; text-indent: 24pt; line-height: 24pt; background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">弗霓提供符合此国标使用的过硫酸钾无氮AR试剂，此产品区别于市售其他产品，不使用过硫酸铵为原料，原料及过程中都避免了N元素的掺入，保证出结果，无需耗时费力的重结晶提纯，无需各个环节找失败原因，开瓶直接使用。<o:p></o:p><p style="background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">技术指标如下:<o:p></o:p><table class="MsoNormalTable" border="0" cellspacing="0" cellpadding="0" width="351" style="width:263.0pt;margin-left:4.65pt;border-collapse:collapse;mso-yfti-tbllook: 1184;mso-padding-alt:0cm 5.4pt 0cm 5.4pt"><tbody><tr style="mso-yfti-irow:0;mso-yfti-firstrow:yes;height:13.5pt"><td width="143" nowrap="" valign="bottom" style="width: 107.1pt; border-width: 1pt; border-style: solid; border-color: windowtext; padding: 0cm 5.4pt; height: 13.5pt;">项目<o:p></o:p></td><td width="208" nowrap="" valign="bottom" style="width: 155.9pt; border-top: 1pt solid windowtext; border-right: 1pt solid windowtext; border-bottom: 1pt solid windowtext; padding: 0cm 5.4pt; height: 13.5pt;">指标<o:p></o:p></td></tr><tr style="mso-yfti-irow:1;height:14.25pt"><td width="143" nowrap="" valign="bottom" style="width: 107.1pt; border-right: 1pt solid windowtext; border-bottom: 1pt solid windowtext; border-left: 1pt solid windowtext; padding: 0cm 5.4pt; height: 14.25pt;">含量<o:p></o:p></td><td width="208" nowrap="" valign="bottom" style="width: 155.9pt; border-bottom: 1pt solid windowtext; border-right: 1pt solid windowtext; padding: 0cm 5.4pt; height: 14.25pt;">≥99.0%<o:p></o:p></td></tr><tr style="mso-yfti-irow:2;height:14.25pt"><td width="143" nowrap="" valign="bottom" style="width: 107.1pt; border-right: 1pt solid windowtext; border-bottom: 1pt solid windowtext; border-left: 1pt solid windowtext; padding: 0cm 5.4pt; height: 14.25pt;">澄清度<o:p></o:p></td><td width="208" nowrap="" valign="bottom" style="width: 155.9pt; border-bottom: 1pt solid windowtext; border-right: 1pt solid windowtext; padding: 0cm 5.4pt; height: 14.25pt;">3号<o:p></o:p></td></tr><tr style="mso-yfti-irow:3;height:14.25pt"><td width="143" nowrap="" valign="bottom" style="width: 107.1pt; border-right: 1pt solid windowtext; border-bottom: 1pt solid windowtext; border-left: 1pt solid windowtext; padding: 0cm 5.4pt; height: 14.25pt;">水不溶物<o:p></o:p></td><td width="208" nowrap="" valign="bottom" style="width: 155.9pt; border-bottom: 1pt solid windowtext; border-right: 1pt solid windowtext; padding: 0cm 5.4pt; height: 14.25pt;">≤0.005%<o:p></o:p></td></tr><tr style="mso-yfti-irow:4;height:14.25pt"><td width="143" nowrap="" valign="bottom" style="width: 107.1pt; border-right: 1pt solid windowtext; border-bottom: 1pt solid windowtext; border-left: 1pt solid windowtext; background-color: rgb(247, 150, 70); padding: 0cm 5.4pt; height: 14.25pt;">总氮<o:p></o:p></td><td width="208" nowrap="" valign="bottom" style="width: 155.9pt; border-bottom: 1pt solid windowtext; border-right: 1pt solid windowtext; background-color: rgb(247, 150, 70); padding: 0cm 5.4pt; height: 14.25pt;">0%<o:p></o:p></td></tr><tr style="mso-yfti-irow:5;height:14.25pt"><td width="143" nowrap="" valign="bottom" style="width: 107.1pt; border-right: 1pt solid windowtext; border-bottom: 1pt solid windowtext; border-left: 1pt solid windowtext; padding: 0cm 5.4pt; height: 14.25pt;">重金属<o:p></o:p></td><td width="208" nowrap="" valign="bottom" style="width: 155.9pt; border-bottom: 1pt solid windowtext; border-right: 1pt solid windowtext; padding: 0cm 5.4pt; height: 14.25pt;">≤0.001%<o:p></o:p></td></tr><tr style="mso-yfti-irow:6;height:14.25pt"><td width="143" nowrap="" valign="bottom" style="width: 107.1pt; border-right: 1pt solid windowtext; border-bottom: 1pt solid windowtext; border-left: 1pt solid windowtext; padding: 0cm 5.4pt; height: 14.25pt;">铁<o:p></o:p></td><td width="208" nowrap="" valign="bottom" style="width: 155.9pt; border-bottom: 1pt solid windowtext; border-right: 1pt solid windowtext; padding: 0cm 5.4pt; height: 14.25pt;">≤0.0002%<o:p></o:p></td></tr><tr style="mso-yfti-irow:7;mso-yfti-lastrow:yes;height:14.25pt"><td width="143" nowrap="" valign="bottom" style="width: 107.1pt; border-right: 1pt solid windowtext; border-bottom: 1pt solid windowtext; border-left: 1pt solid windowtext; padding: 0cm 5.4pt; height: 14.25pt;">锰<o:p></o:p></td><td width="208" nowrap="" valign="bottom" style="width: 155.9pt; border-bottom: 1pt solid windowtext; border-right: 1pt solid windowtext; padding: 0cm 5.4pt; height: 14.25pt;">≤0.0001%<o:p></o:p></td></tr></tbody></table><span style="font-size: 12pt; font-family: "Microsoft YaHei Light", sans-serif; color: rgb(102, 102, 102); background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;">总氮是指水体中有机氮和无机氮含量的总和，总氮是控制水质的一项重要指标。测定水质总氮的国家标准方法是碱性过硫酸钾消解紫外分光光度法(HJ636—2012)。用该法测定水质总氮，常发生标准曲线线性达不到要求和空白值偏高的问题，而这两项问题直接影响了测定结果的准确性。影响总氮测定的主要因素是过硫酸钾与氢氧化钠试剂的总氮含量，这二种试剂符合要求，检测轻松完成<span style="font-size: 12pt; font-family: "Microsoft YaHei Light", sans-serif; color: rgb(102, 102, 102); background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"> <span style="font-size: 12pt; font-family: "Microsoft YaHei Light", sans-serif; color: rgb(102, 102, 102); background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"> <div><span style="font-size: 12pt; font-family: "Microsoft YaHei Light", sans-serif; color: rgb(102, 102, 102); background-image: initial; background-position: initial; background-size: initial; background-repeat: initial; background-attachment: initial; background-origin: initial; background-clip: initial;"><img src="http://www.forneeds.cn/public/images/c3/ee/22/17bfd22e0b8c104974e3a752ccb3fa0c9058853a.png?1591662607#w"></div>