Subject: Re: [DCHAS-L] Chloride interference in COD method
Date: Tue, 30 Jan 2018 04:57:04 -0800
Reply-To: neal**At_Symbol_Here**CHEMICAL-SAFETY.COM
Message-ID: 000201d399c9$d48ad1a0$7da074e0$**At_Symbol_Here**

The CHAS list is probably not the best resource for this question; I suggest you contact the technical staff at the Hach Company




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From: ACS Division of Chemical Health and Safety [mailto:DCHAS-L**At_Symbol_Here**PRINCETON.EDU] On Behalf Of AbdulAziz AlRueshed
Sent: Monday, January 29, 2018 11:29 PM
Subject: Re: [DCHAS-L] Chloride interference in COD method


Friendly reminder,



Sent from my iPhone

On 24 Jan 2018, at 9:57 PM, AbdulAziz AlRueshed <abdulaziz208**At_Symbol_Here**> wrote:



Dear All,

We are conducting a COD measurement as routine analysis for seawater samples. Currently, we are utilizing chloride elimination kit to minimize this interference. The kit worked efficiently and reduced the chloride concentration in the examples.
The concentration of COD after using the chloride kit around 150ppm. Is this acceptable level for the COD in sea water.
Can anyone give me the range of the COD in seawater or gulf? Especially that the TOC in our samples less than 5 ppm.

Best regards,

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