heavy metal test rusult

Heavy metal test results Test resTest dateSample1、Water sample after the last time washing 2014-1-32、Seaweed after washing and oven dry3、Sulfuric acid solution4、Sodium hydroxide solution2014-1-111、Water sample after the last time washing 2、Seaweed after washing and oven dry1、Water sample after the last time washing 2014-1-192、Seaweed after washing and oven dry3、Sulfuric acid solution4、Sodium hydroxide solution2014-1-251、Water sample after the last time washing 2、Seaweed after washing and oven dry1、Water sample after the last time washing 2014-2-122、Seaweed after washing and oven dry3、Sulfuric acid solution4、Sodium hydroxide solution2014-2-181、Water sample after the last time washing 2、Seaweed after washing and oven dry1、Water sample after the last time washing 2、Seaweed after washing and oven dry1、Water sample after the last time washing 2、Seaweed after washing and oven dry1、Water sample after the last time washing 2014-3-102、Seaweed after washing and oven dry3、Sulfuric acid solution4、Sodium hydroxide solutionAs（mg/kg）Pb（mg/kg）0.5891.5971.7211.9950.3721.3650.9261.1890.5381.8661.7971.3541.2851.4350.9231.6071.4690.5731.3180.981.6611.4690.7051.0361.6721.0551.0320.8371.1132.2690.4520.8022.0321.051.0060.6121.0611.2961.3462.631.871.31.61.8131.0360.9141.0830.8951.4190.6491.4941.5762014-2-272014-3-5Description and explanation:

1、How to judge seaweed after alkali treatment and 4-5 times washing and produced beer clarifier primportant two indicators are: 1, To monitor the heavy metal concentration levels of water sample afwashing ; 2, To monitor the heavy metal concentration levels of dried seaweed after alkali treatmenthese two indicators is less than lead, arsenic, mercury, cadmium standard carrageenan content specyou can judge the quality of products is guaranteed .

2、The purpose and function of added sulfuric acid and washing is: For carrageenan prod

necessary step. Carrageenan finally pH is alkaline and the amount of added sulfuric acid is only avis mainly to reduce the pH value, neutralizing the reduntant alkli,otherwise,The PH of produced carPH is too higher, the stability and physicochemical properties of carrageenan weill be effected. Thsulfuric acid added is necessary and all will be neutralized. The objective of Washing is relativelregulate pH value of the product, and reduce the residual alkaline of seaweed inside, and make the of cleanliness. So, the content of heavy metals of the last washing water we control will be the immonitoring way; At the same time, we test the heacy metal of the dried seaweed after washing after monitor the heavy meatal content level,and to achieve control of heavy metal content of the final p

3、In addition to the above two indicators, the factory can also monitor heavy metal co

caustic soda (sodium hydroxide) and the sulfuric acid every two weeks.Although the monitoring resulliquid caustic soda (sodium hydroxide) and the sulfuric acid can not completely represent the heavfinal product, them can explain the heavy metal content fifference between the uesed industrial grahydroxide) & the sulfuric acid and the product standard GB15044&E407a.These necessary inspection anand supervise and control the heavy meatal risk of the our final products.

t result carrageenan EU standardE407a and GB15044 ofHg（mg/kg）Cd（mg/kg）china national standard0.7580.7010.7040.6310.7670.4890.9270.480.4150.9760.3930.4070.960.7630.6490.5590.5910.5210.7830.4270.9890.1610.510.9030.6220.4811.0870.5541.5320.3490.620.850.8751.3371.1230.9830.9931.2811.8630.2731.8431.1031.2931.2331.1270.2160.971.1080.8151.1240.270.154Pb：≤5mg/kg;As: ≤3mg/kg;Hg：≤1mg/kg;Cd: ≤2mg/kg;oduced beer clarifier product is safe or not, theevels of water sample after the end of the last timeed after alkali treatment and washing. If the result ofcarrageenan content specified in GB15044-2009 and E407a,

production, alkali treatment process is a

sulfuric acid is only avery small . Adding sulfuric acide,The PH of produced carrageenan will be too higher.Ifan weill be effected. Therefore, a small amount of of Washing is relatively simple, mainly is to furthered inside, and make the products have a certain degreee control will be the important and indirectly

eed after washing after washing is in order to directlyl content of the final product.

al content of the uesed industrial grade liquid

ugh the monitoring results of the uesed industrial gradeetely represent the heavy metal content level of thethe uesed industrial grade liquid caustic soda (sodium necessary inspection and test will help us to monitor