新聞中心

News Center

聯(lián)系電話：18628242231 13351543065

地址：成都高新區(qū)天映路102號一號樓

你的當前位置為：首頁 -- 新聞中心 -- 行業(yè)動態(tài)

水質二氧化氯和亞氯酸鹽的測定連續(xù)滴定碘量法2

來源:本站發(fā)布時間：2018-10-16 18:31:36 瀏覽次數(shù):5348次

1 適用范圍

本標準規(guī)定了測定紡織染整工業(yè)廢水中二氧化氯和亞氯酸鹽的連續(xù)滴定碘量法。本標準適用于使用亞漂工藝的紡織染整工業(yè)排放廢水中二氧化氯和亞氯酸鹽的測定。當取樣量為 150 ml時，二氧化氯的方法檢出限為 0.09 mg/L，測定下限為 0.36 mg/L；亞氯酸鹽（以亞氯酸根計）的方法檢出限為 0.08 mg/L，測定下限為 0.32 mg/L。

2.方法原理

二氧化氯和亞氯酸根在不同 pH值條件下，能氧化碘離子而析出碘。同一個樣品，在中性條件下，用硫代硫酸鈉溶液滴定二氧化氯與碘離子反應轉化為亞氯酸鹽時析出的碘，再調節(jié)樣品 pH值為1～3，用硫代硫酸鈉溶液滴定亞氯酸鹽與碘離子反應時析出的碘，通過連續(xù)滴定來測定二氧化氯和亞氯酸根含量。見反應式（1）和反應式（2）。

ClO2+I?→ClO2-+1/2I2 （1）

HClO2+4HI→2I2+HCl+2H2O （2）

3 干擾和消除

3.1 存在其它含氧氯化物，以及能與 I2 和I-發(fā)生氧化、還原反應的物質時，會產(chǎn)生干擾。

3.2 色度對滴定終點會產(chǎn)生干擾。水樣有色度時，應取相同水樣做為滴定終點判斷的參比樣品。

4 試劑和材料

除非另有說明，分析時均使用符合國家標準的分析純化學試劑，實驗用水為蒸餾水或去離子水。

4.1 碘化鉀（KI）：晶體。

4.2 硫酸：ρ（H2SO4 ）=1.84 g/ml。

4.3 碘酸鉀（KIO3 ）：優(yōu)級純。使用前，應于 105℃～110℃烘 2 h，置于干燥器內冷卻至室溫，備用。

4.4 氫氧化鈉（NaOH）。

4.5 磷酸二氫鉀（KH2PO4 ·2H2O）。

4.6 磷酸氫二鈉（Na2HPO4 ·2H2O）。

4.7 硫代硫酸鈉（Na2S2O3·5H2O）。

4.8 無水碳酸鈉（Na2CO3 ）。

4.9 可溶性淀粉 [(C6H10O5 ) n ] 。

4.10 水楊酸（C7H6O3 ）。

4.11 氯化鋅（ZnCl 2 ）。

4.12 硫酸溶液：1+1（v/v），用硫酸（4.2）配制。

4.13 氫氧化鈉溶液：c（NaOH）=0.1 mol/L。

稱取 4 g氫氧化鈉（4.4）溶于少量水中，稀釋至 1000 ml。

4.14 緩沖溶液：pH=7。

稱取 34.0 g磷酸二氫鉀（4.5）和 35.5 g磷酸氫二鈉（4.6）于燒杯中，加水溶解后，稀釋至 1000 ml。

4.15 碘酸鉀標準溶液：c（1/6KIO3 ）=0.0500 mol/L。

稱取 1.7835 g（精確至 0.0001 g）碘酸鉀（4.3），用水溶解并定容至 1000 ml容量瓶，搖勻。貯存于棕色玻璃試劑瓶中，避光保存。

4.16 硫代硫酸鈉標準溶液：c（Na2S2O3 ）≈0.05 mol/L。

上一個：國務院關于修改〈建設項目環(huán)境保護管理條例〉的決定

下一個：沒有了

返回列表

頁面Trace信息

當前頁面 : /hangyebiaozhun/201810/6.html
模板緩存 : D:\wamp\chyc/data/front/runtime/cache/5502f2474412663db68d51f8eb97a1a2.php
請求方法 : GET
通信協(xié)議 : HTTP/1.1
請求時間 : 2025-04-01 11:05:59
用戶代理 : Mozilla/5.0 (Windows NT 10.0; WOW64; Trident/7.0; rv:11.0) like Gecko
會話ID : gg20214kn5e1at0im1n44i1cr0
日志記錄 : 81條日志
[ 2025-04-01T11:05:59+08:00 ] SQL: RunTime:0.005997s SQL = SHOW COLUMNS FROM fangfa_category
[ 2025-04-01T11:05:59+08:00 ] SQL: RunTime:0.000263s SQL = SELECT `catid` FROM `fangfa_category` WHERE `catdir`='hangyebiaozhun' LIMIT 1
[ 2025-04-01T11:05:59+08:00 ] NOTIC: [2048] Only variables should be assigned by reference FbaseAction.class.php 第 69 行.
[ 2025-04-01T11:05:59+08:00 ] NOTIC: [8] Undefined index: forward FbaseAction.class.php 第 70 行.
[ 2025-04-01T11:05:59+08:00 ] NOTIC: [2048] Declaration of ContentModel::add() should be compatible with Model::add($data = '', $options = Array) ContentModel.class.php 第 587 行.
[ 2025-04-01T11:05:59+08:00 ] NOTIC: [2048] Declaration of ContentModel::delete() should be compatible with Model::delete($options = Array) ContentModel.class.php 第 587 行.
[ 2025-04-01T11:05:59+08:00 ] SQL: RunTime:0.004552s SQL = SHOW COLUMNS FROM fangfa_content
[ 2025-04-01T11:05:59+08:00 ] NOTIC: [8] Undefined index: userdata FcontentAction.class.php 第 51 行.
[ 2025-04-01T11:05:59+08:00 ] NOTIC: [8] Undefined index: userdata FcontentAction.class.php 第 51 行.
[ 2025-04-01T11:05:59+08:00 ] NOTIC: [8192] mysql_escape_string(): This function is deprecated; use mysql_real_escape_string() instead. DbMysql.class.php 第 400 行.
[ 2025-04-01T11:05:59+08:00 ] SQL: RunTime:0.000305s SQL = SELECT `cid` FROM `fangfa_content` WHERE ( `url` = '201810/6.html' ) AND ( `status` = 9 ) LIMIT 1
[ 2025-04-01T11:05:59+08:00 ] NOTIC: [8192] mysql_escape_string(): This function is deprecated; use mysql_real_escape_string() instead. DbMysql.class.php 第 400 行.
[ 2025-04-01T11:05:59+08:00 ] SQL: RunTime:0.000392s SQL = SELECT * FROM `fangfa_content` WHERE ( `url` = '201810/6.html' ) LIMIT 1
[ 2025-04-01T11:05:59+08:00 ] SQL: RunTime:0.004484s SQL = SHOW COLUMNS FROM fangfa_content_article
[ 2025-04-01T11:05:59+08:00 ] NOTIC: [8192] mysql_escape_string(): This function is deprecated; use mysql_real_escape_string() instead. DbMysql.class.php 第 400 行.
[ 2025-04-01T11:05:59+08:00 ] SQL: RunTime:0.000365s SQL = SELECT * FROM `fangfa_content_article` WHERE ( `cid` = '6' ) LIMIT 1
[ 2025-04-01T11:05:59+08:00 ] SQL: RunTime:0.005738s SQL = SHOW COLUMNS FROM fangfa_model_field
[ 2025-04-01T11:05:59+08:00 ] SQL: RunTime:0.000317s SQL = SELECT `fieldid` FROM `fangfa_model_field` WHERE `status`='1' AND `modelid`='1'
[ 2025-04-01T11:05:59+08:00 ] SQL: RunTime:0.002991s SQL = SHOW COLUMNS FROM fangfa_content_tag
[ 2025-04-01T11:05:59+08:00 ] NOTIC: [8192] mysql_escape_string(): This function is deprecated; use mysql_real_escape_string() instead. DbMysql.class.php 第 400 行.
[ 2025-04-01T11:05:59+08:00 ] SQL: RunTime:0.000221s SQL = SELECT fangfa_tag.name FROM `fangfa_content_tag` LEFT JOIN fangfa_tag ON (fangfa_tag.tagid=fangfa_content_tag.tagid) WHERE ( fangfa_content_tag.keyid = 'c-6' ) ORDER BY fangfa_tag.tagid DESC
[ 2025-04-01T11:05:59+08:00 ] NOTIC: [2] Invalid argument supplied for foreach() ContentModel.class.php 第 448 行.
[ 2025-04-01T11:05:59+08:00 ] NOTIC: [8] Undefined variable: value Field.class.php 第 203 行.
[ 2025-04-01T11:05:59+08:00 ] NOTIC: [8] Undefined variable: value Field.class.php 第 201 行.
[ 2025-04-01T11:05:59+08:00 ] NOTIC: [8] Undefined variable: value Field.class.php 第 201 行.
[ 2025-04-01T11:05:59+08:00 ] NOTIC: [2] strpos(): Empty needle ThumbField.class.php 第 21 行.
[ 2025-04-01T11:05:59+08:00 ] NOTIC: [8] Undefined variable: value Field.class.php 第 201 行.
[ 2025-04-01T11:05:59+08:00 ] NOTIC: [8] Undefined variable: value Field.class.php 第 201 行.
[ 2025-04-01T11:05:59+08:00 ] NOTIC: [8] Undefined variable: value Field.class.php 第 201 行.
[ 2025-04-01T11:05:59+08:00 ] NOTIC: [8] Undefined variable: value Field.class.php 第 201 行.
[ 2025-04-01T11:05:59+08:00 ] NOTIC: [8] Undefined variable: value Field.class.php 第 201 行.
[ 2025-04-01T11:05:59+08:00 ] NOTIC: [8] Undefined index: p FbaseAction.class.php 第 262 行.
[ 2025-04-01T11:05:59+08:00 ] NOTIC: [8] Undefined index: p FbaseAction.class.php 第 262 行.
[ 2025-04-01T11:05:59+08:00 ] NOTIC: [8] Undefined index: p FbaseAction.class.php 第 262 行.
[ 2025-04-01T11:05:59+08:00 ] NOTIC: [8] Undefined index: p FbaseAction.class.php 第 262 行.
[ 2025-04-01T11:05:59+08:00 ] NOTIC: [8] Undefined index: p FbaseAction.class.php 第 262 行.
[ 2025-04-01T11:05:59+08:00 ] NOTIC: [8] Undefined index: p FbaseAction.class.php 第 262 行.
[ 2025-04-01T11:05:59+08:00 ] NOTIC: [8] Undefined index: p FbaseAction.class.php 第 262 行.
[ 2025-04-01T11:05:59+08:00 ] NOTIC: [8] Undefined index: p FbaseAction.class.php 第 262 行.
[ 2025-04-01T11:05:59+08:00 ] NOTIC: [8] Undefined index: p FbaseAction.class.php 第 262 行.
[ 2025-04-01T11:05:59+08:00 ] NOTIC: [8] Undefined index: p FbaseAction.class.php 第 262 行.
[ 2025-04-01T11:05:59+08:00 ] NOTIC: [8] Undefined index: p FbaseAction.class.php 第 262 行.
[ 2025-04-01T11:05:59+08:00 ] NOTIC: [8] Undefined index: p FbaseAction.class.php 第 262 行.
[ 2025-04-01T11:05:59+08:00 ] NOTIC: [8] Undefined index: p FbaseAction.class.php 第 262 行.
[ 2025-04-01T11:05:59+08:00 ] NOTIC: [8] Undefined index: p FbaseAction.class.php 第 262 行.
[ 2025-04-01T11:05:59+08:00 ] NOTIC: [8] Undefined index: p FbaseAction.class.php 第 262 行.
[ 2025-04-01T11:05:59+08:00 ] NOTIC: [8] Undefined index: p FbaseAction.class.php 第 262 行.
[ 2025-04-01T11:05:59+08:00 ] NOTIC: [8] Undefined index: p FbaseAction.class.php 第 262 行.
[ 2025-04-01T11:05:59+08:00 ] NOTIC: [8] Undefined index: p FbaseAction.class.php 第 262 行.
[ 2025-04-01T11:05:59+08:00 ] NOTIC: [8] Undefined index: p FbaseAction.class.php 第 262 行.
[ 2025-04-01T11:05:59+08:00 ] NOTIC: [8] Undefined index: p FbaseAction.class.php 第 262 行.
[ 2025-04-01T11:05:59+08:00 ] NOTIC: [8] Undefined index: p FbaseAction.class.php 第 262 行.
[ 2025-04-01T11:05:59+08:00 ] NOTIC: [8] Undefined index: p FbaseAction.class.php 第 262 行.
[ 2025-04-01T11:05:59+08:00 ] SQL: RunTime:0.005700s SQL = SHOW COLUMNS FROM fangfa_comment
[ 2025-04-01T11:05:59+08:00 ] SQL: RunTime:0.000235s SQL = SELECT COUNT(*) AS tp_count FROM `fangfa_comment` WHERE newsid =6 and status=1 LIMIT 1
[ 2025-04-01T11:05:59+08:00 ] NOTIC: [8] Undefined index: content FcontentAction.class.php 第 149 行.
[ 2025-04-01T11:05:59+08:00 ] SQL: RunTime:0.000191s SQL = SELECT * FROM `fangfa_comment` WHERE newsid =6 and status=1 ORDER BY id DESC
[ 2025-04-01T11:05:59+08:00 ] SQL: RunTime:0.003939s SQL = SHOW COLUMNS FROM fangfa_content
[ 2025-04-01T11:05:59+08:00 ] SQL: RunTime:0.000473s SQL = SELECT * FROM `fangfa_content` WHERE ((`cid` > 6 and `sort`=1 ) or `sort`<1) and `status` = 9 and `catid`=22 ORDER BY sort desc,cid asc LIMIT 1
[ 2025-04-01T11:05:59+08:00 ] SQL: RunTime:0.000380s SQL = SELECT * FROM `fangfa_content` WHERE ((`cid` < 6 and `sort`=1 )or `sort`>1) and `status` = 9 and `catid`=22 ORDER BY sort asc,cid DESC LIMIT 1
[ 2025-04-01T11:05:59+08:00 ] SQL: RunTime:0.005127s SQL = SHOW COLUMNS FROM fangfa_content_count
[ 2025-04-01T11:05:59+08:00 ] SQL: RunTime:0.000239s SQL = SELECT * FROM `fangfa_content_count` WHERE `cid` = 6 LIMIT 1
[ 2025-04-01T11:05:59+08:00 ] SQL: RunTime:0.000369s SQL = UPDATE `fangfa_content_count` SET `hits`=5349 WHERE cid='6'
[ 2025-04-01T11:05:59+08:00 ] NOTIC: [2048] Declaration of RelationModel::_after_insert() should be compatible with Model::_after_insert($data, $options) RelationModel.class.php 第 415 行.
[ 2025-04-01T11:05:59+08:00 ] NOTIC: [2048] Declaration of CategoryModel::_after_insert() should be compatible with Model::_after_insert($data, $options) CategoryModel.class.php 第 15 行.
[ 2025-04-01T11:05:59+08:00 ] NOTIC: [2048] Declaration of CategoryModel::add() should be compatible with Model::add($data = '', $options = Array) CategoryModel.class.php 第 15 行.
[ 2025-04-01T11:05:59+08:00 ] NOTIC: [2048] Declaration of CategoryModel::save() should be compatible with Model::save($data = '', $options = Array) CategoryModel.class.php 第 15 行.
[ 2025-04-01T11:05:59+08:00 ] NOTIC: [2048] Declaration of CategoryModel::delete() should be compatible with Model::delete($options = Array) CategoryModel.class.php 第 15 行.
[ 2025-04-01T11:05:59+08:00 ] SQL: RunTime:0.005633s SQL = SHOW COLUMNS FROM fangfa_category
[ 2025-04-01T11:05:59+08:00 ] SQL: RunTime:0.000349s SQL = SELECT `catid` FROM `fangfa_category` WHERE ( `catid` IN (1,2,3,4,5,6,40) ) AND ( `isshow` = 1 ) ORDER BY `sort` ASC
[ 2025-04-01T11:05:59+08:00 ] NOTIC: [8] Undefined index: child %%62^622^622796EB%%article_view.html.php 第 46 行.
[ 2025-04-01T11:05:59+08:00 ] NOTIC: [8] Undefined index: child %%62^622^622796EB%%article_view.html.php 第 46 行.
[ 2025-04-01T11:05:59+08:00 ] NOTIC: [8] Undefined index: child %%62^622^622796EB%%article_view.html.php 第 46 行.
[ 2025-04-01T11:05:59+08:00 ] NOTIC: [2] Missing argument 1 for Ad::__construct(), called in D:\wamp\chyc\include\library\ThinkPHP\Common\functions.php on line 259 and defined Ad.class.php 第 40 行.
[ 2025-04-01T11:05:59+08:00 ] NOTIC: [2] Missing argument 2 for Ad::__construct(), called in D:\wamp\chyc\include\library\ThinkPHP\Common\functions.php on line 259 and defined Ad.class.php 第 40 行.
[ 2025-04-01T11:05:59+08:00 ] NOTIC: [8] Undefined variable: type Ad.class.php 第 41 行.
[ 2025-04-01T11:05:59+08:00 ] NOTIC: [8] Undefined variable: setting Ad.class.php 第 42 行.
[ 2025-04-01T11:05:59+08:00 ] NOTIC: [2] Invalid argument supplied for foreach() function.ffcategory.php 第 84 行.
[ 2025-04-01T11:05:59+08:00 ] NOTIC: [8] Undefined variable: pagesize function.fflink.php 第 26 行.
[ 2025-04-01T11:05:59+08:00 ] SQL: RunTime:0.005737s SQL = SHOW COLUMNS FROM fangfa_friendlink
[ 2025-04-01T11:05:59+08:00 ] SQL: RunTime:0.000357s SQL = SELECT * FROM `fangfa_friendlink` WHERE ( `status` = 1 ) ORDER BY created DESC
加載文件 : 90
[0] => D:\wamp\chyc\index.php
[1] => D:\wamp\chyc\define.php
[2] => D:\wamp\chyc\include\library\ThinkPHP\ThinkPHP.php
[3] => D:\wamp\chyc\include\library\ThinkPHP\Common\runtime.php
[4] => D:\wamp\chyc\include\library\ThinkPHP\Common\defines.php
[5] => D:\wamp\chyc\front\Conf\paths.php
[6] => D:\wamp\chyc\front\Conf\core.php
[7] => D:\wamp\chyc\include\library\ThinkPHP\Common\functions.php
[8] => D:\wamp\chyc\include\library\ThinkPHP\Lib\Think\Core\Think.class.php
[9] => D:\wamp\chyc\include\library\ThinkPHP\Lib\Think\Exception\ThinkException.class.php
[10] => D:\wamp\chyc\include\library\ThinkPHP\Lib\Think\Core\Log.class.php
[11] => D:\wamp\chyc\include\library\ThinkPHP\Lib\Think\Core\App.class.php
[12] => D:\wamp\chyc\include\library\ThinkPHP\Lib\Think\Core\Action.class.php
[13] => D:\wamp\chyc\include\library\ThinkPHP\Lib\Think\Core\View.class.php
[14] => D:\wamp\chyc\front\Common\alias.php
[15] => D:\wamp\chyc\include\library\ThinkPHP\Common\convention.php
[16] => D:\wamp\chyc\front\Conf\config.php
[17] => D:\wamp\chyc\data\config.inc.php
[18] => D:\wamp\chyc\data\config.cache.php
[19] => D:\wamp\chyc\front\Common\common.php
[20] => D:\wamp\chyc\front\Conf\routes.php
[21] => D:\wamp\chyc\front\Conf\tags.php
[22] => D:\wamp\chyc\include\library\ThinkPHP\Common\debug.php
[23] => D:\wamp\chyc\include\library\ThinkPHP\Lib\Think\Core\Model.class.php
[24] => D:\wamp\chyc\include\library\ThinkPHP\Lib\Think\Db\Db.class.php
[25] => D:\wamp\chyc\include\library\ThinkPHP\Lib\Think\Db\Driver\DbMysql.class.php
[26] => D:\wamp\chyc\data\cache\category_22.php
[27] => D:\wamp\chyc\include\library\ThinkPHP\Lang\zh-cn.php
[28] => D:\wamp\chyc\front\Lib\Action\FcontentAction.class.php
[29] => D:\wamp\chyc\front\Lib\Action\FbaseAction.class.php
[30] => D:\wamp\chyc\include\library\ThinkPHP\Lib\ORG\Util\Input.class.php
[31] => D:\wamp\chyc\front\Lib\Model\ContentextModel.class.php
[32] => D:\wamp\chyc\admin\Lib\Model\ContentModel.class.php
[33] => D:\wamp\chyc\include\Pager.class.php
[34] => D:\wamp\chyc\data\cache\model_1.php
[35] => D:\wamp\chyc\data\cache\modelField_1.php
[36] => D:\wamp\chyc\data\cache\modelField_2.php
[37] => D:\wamp\chyc\data\cache\modelField_3.php
[38] => D:\wamp\chyc\data\cache\modelField_5.php
[39] => D:\wamp\chyc\data\cache\modelField_6.php
[40] => D:\wamp\chyc\data\cache\modelField_7.php
[41] => D:\wamp\chyc\data\cache\modelField_8.php
[42] => D:\wamp\chyc\data\cache\modelField_9.php
[43] => D:\wamp\chyc\data\cache\modelField_10.php
[44] => D:\wamp\chyc\data\cache\modelField_11.php
[45] => D:\wamp\chyc\data\cache\modelField_12.php
[46] => D:\wamp\chyc\data\cache\modelField_13.php
[47] => D:\wamp\chyc\data\cache\modelField_14.php
[48] => D:\wamp\chyc\data\cache\modelField_15.php
[49] => D:\wamp\chyc\data\cache\modelField_16.php
[50] => D:\wamp\chyc\data\cache\modelField_20.php
[51] => D:\wamp\chyc\data\cache\modelField_21.php
[52] => D:\wamp\chyc\include\Field.class.php
[53] => D:\wamp\chyc\include\field\CatidField.class.php
[54] => D:\wamp\chyc\include\field\TitleField.class.php
[55] => D:\wamp\chyc\include\field\InputField.class.php
[56] => D:\wamp\chyc\include\field\ThumbField.class.php
[57] => D:\wamp\chyc\include\field\AttrField.class.php
[58] => D:\wamp\chyc\include\field\TextareaField.class.php
[59] => D:\wamp\chyc\include\field\EditorField.class.php
[60] => D:\wamp\chyc\include\field\BoxField.class.php
[61] => D:\wamp\chyc\include\field\TagField.class.php
[62] => D:\wamp\chyc\include\field\DatetimeField.class.php
[63] => D:\wamp\chyc\include\library\ThinkPHP\Lib\ORG\Util\Page.class.php
[64] => D:\wamp\chyc\include\library\ThinkPHP\Lib\Think\Util\Template\TemplateSmarty.class.php
[65] => D:\wamp\chyc\include\Smarty\Smarty.class.php
[66] => D:\wamp\chyc\data\front\runtime\templates_c\%%62^622^622796EB%%article_view.html.php
[67] => D:\wamp\chyc\include\Smarty\internals\core.load_plugins.php
[68] => D:\wamp\chyc\include\Smarty\internals\core.assemble_plugin_filepath.php
[69] => D:\wamp\chyc\include\tag\function.ffcategory.php
[70] => D:\wamp\chyc\include\tag\function.ffgetpage.php
[71] => D:\wamp\chyc\include\tag\function.ffad.php
[72] => D:\wamp\chyc\include\tag\function.ffset.php
[73] => D:\wamp\chyc\include\Smarty\internals\core.get_include_path.php
[74] => D:\wamp\chyc\data\front\runtime\templates_c\%%0C^0C5^0C52E3C7%%header.html.php
[75] => D:\wamp\chyc\admin\Lib\Model\CategoryModel.class.php
[76] => D:\wamp\chyc\include\library\ThinkPHP\Lib\Think\Core\Model\RelationModel.class.php
[77] => D:\wamp\chyc\data\cache\category_1.php
[78] => D:\wamp\chyc\data\cache\category_2.php
[79] => D:\wamp\chyc\data\cache\category_3.php
[80] => D:\wamp\chyc\data\cache\category_4.php
[81] => D:\wamp\chyc\data\cache\category_5.php
[82] => D:\wamp\chyc\data\cache\category_6.php
[83] => D:\wamp\chyc\data\cache\category_40.php
[84] => D:\wamp\chyc\data\cache\category_20.php
[85] => D:\wamp\chyc\data\cache\category_26.php
[86] => D:\wamp\chyc\data\ads\ad_1.php
[87] => D:\wamp\chyc\include\Ad.class.php
[88] => D:\wamp\chyc\data\front\runtime\templates_c\%%FD^FD7^FD7FB2B1%%footer.html.php
[89] => D:\wamp\chyc\include\tag\function.fflink.php

97精品国产综合久久,国产青草视频在线观看,久久国产精品国产精品,视频在线观看一区二区三区

水質 二氧化氯和亞氯酸鹽的測定 連續(xù)滴定碘量法2

水質二氧化氯和亞氯酸鹽的測定連續(xù)滴定碘量法2