Qauv 8-60 ML EPA coj qauv rau ib puag ncig kev soj ntsuam

1. Tom qab & tseem ceeb
   Hauv kev saib xyuas ib puag ncig, qauv 8-60 ML EPA-ntawv lees paub iav vials (Voa fwj) yog cov khoom lag luam rau kev khaws cov vocs, cov dej kuaj, thiab av rho tawm. Ua los ntawm High-qib hom i borosilicate iav nrog PTFEE SNRICATION, thiab tag nrho cov saw hlau-ntawm-tus menyuam tu siab. Siv ua ntej ntxuav, ntshiab lossis amber voa vials uas ntsib EPA Extractabs cov qauv minimizes kev ua haujlwm sib txawv thiab ua kom cov ntaub ntawv ua haujlwm ntau.

2. Kev Tshawb Fawb & Kev Tiv Thaiv Kev Txhim Kho
   a. Daim teb sau
    Kuv. Siv cov ntawv sau ua ntej, ua ntej ntxuav vials nrog tsis muaj headspace.
    ii. Sau rau ntawm thaj chaw EPA Txuj 5035 (tsis muaj cua sib tshuam).
    III. Hnav hnab looj tes thiab siv cov cuab yeej mob kom tsis txhob muaj paug.
   b. Kev ceev
    Kuv. Ntxiv cov tshuaj tiv thaiv tshwj xeeb (piv txwv li, sulfuric acid rau cov agicics; sodium bisulfate rau vocs).
    ii. Zawm Cap rau nias Septum tawm tsam cov qauv saum npoo av, txhav txhav hauv analytes.
   c. Thauj & Cia
    Kuv. Khaws ntawm 4 ° C hauv qhov tsaus ntuj; Thauj hauv cov insulated txias nrog dej khov.
    ii. Ua kom muaj kev saib xyuas tus lej txawv txav thoob plaws txoj saw ntawm kev saib xyuas.
    III. Ua raws li EPA tuav lub sij hawm (piv txwv li, vocs ≤ 14 hnub).
   d. Daim Ntawv Them Rov & Kev Ntsuam Xyuas
    Kuv. Soj ntsuam kev ncaj ncees. Log IDs rau traceability.
    ii. Txheeb xyuas ncaj qha (piv txwv li, Headspace GC) lossis hloov nrog kev tuav ntawm kev tuav.

3. Thawv khoom & qauv ruaj khov
   a. Hom Kuv borosilicate iav
    Kuv. ≥ 80% Sio₂-siab thermal ua thiab acid \ / paus inertness.
    ii. Tsis txhob dag alkaline ions.
    III. Amber version tiv thaiv lub teeb-rhiab analytes.
   b. Cov Dej Qab Zib-Laim iav (tsis pom zoo)
    Kuv. Ntau dua Alkali cov ntsiab lus tuaj yeem ua kom tsis txhob ua rau cov acidic kuaj, cov txiaj ntsig nyuaj.

4. Kev cai tswjfwm cov cai & ua raws
   a. EPA Txuj Ci Specifications
    Kuv. Txoj Kev 5035A (Sw-846): 60 ml Septum Jars lossis 40 ML PTFE-lined ntsia hlau-cap vials rau av Vocs.
    ii. Txoj Kev 1631: Lace Mercury Kev Tshawb Xyuas xav tau FEP \ / pfa-lined lossis hom kuv khob ntim.
    III. Cov hau kev 524.2 & 5021A: Amber Borosilate Voa vials nrog PTFE \ / Silicone Septicone.
    IV. 40 CFR 136: Cov thawv pom zoo yuav tsum tau xa <50 ppb toc thiab negligible hlau leachables.
   b. Kev Tsim Nyog
    Kuv. Voa vials nyob rau hauv txoj kev 5035A ua tiav ≥ 95% Voc rov qab.
    ii. FEP \ / pfa-lined lub kaus mom qhia tsis muaj qhov tseem ceeb hlau leaching txawm nyob hauv cov acids muaj zog.

5. CAP Tsim & Ua piv txwv kev coj ua piv txwv zoo tshaj plaws
   a. Cap & Septa xaiv
    Kuv. PTFE \ / Silicone Septicone nyob rau hauv Phib lossis Yas Caps tiv thaiv VOC poob.
    ii. FEP \ / pfa-lined lub kaus mom rau cov hnoos qeev (muaj zog acids \ / oxidizers).
    III. Ua kom txhua lub kaus mom yog taum ua pov thawj, inert, thiab epa-ua raws.
   b. Cov qauv daws teeb meem
    Kuv. Ib-kauj ruam workflow (SW-846 5035): Lab-npaj vials tau sau rau ntawm thaj chaw thiab xa rov qab rau ncaj qha-thiab-cuab.
    ii. Sau ncaj qha rau & Foob Minimizes cov kauj ruam hloov chaw, txo qis kev pheej hmoo.
    III. Cov khoom siv Coring uas load ntau cov qauv ncaj qha rau hauv Voa vials txuas ntxiv txiav kev poob.

6. Tag
   Los ntawm teb sau los ntawm kev kuaj xyuas kev soj ntsuam, ua haujlwm EPA-FOREY DAB TSI IT BORSETS-THIAB PERCEATURS MEXUS LAWV LAWM, txhawm rau ua raws li kev ncaj ncees. Cov thawv ntim khoom thiab cov haujlwm ua haujlwm txo cov kev sib txuas lus sib txuas, xa khoom kom tau txais txiaj ntsig, cov ntaub ntawv tiv thaiv ib puag ncig.

Cov Ntsiab Lus Tseem Ceeb

• Siv ua ntej ntxuav, headspace-dawb voa vials ntawm-site nrog hnab looj tes thiab cov cuab yeej mob siab.

• Ntxiv cov tshuaj tiv thaiv thiab ua kom nruj ptfe \ / silicone sentric lub kaus mom tam sim ntawd.

• Khaws ntawm 4 ° C hauv qhov tsaus ntuj; thauj hauv txias, cov ntim tshuaj insulated.

• Soj ntsuam vials thiab log ids ua ntej tsom xam; Khiav ncaj qha Headspace GC lossis Tsawg-cuam tshuam hloov chaw.

• Xaiv hom i borosilicate iav (amber rau lub teeb-rhiab) thiab FEP \ / pfa-lined lub kaus mom rau kev txhoj puab heev matrices.

• Txais ib-kauj ruam-kauj ruam sau-thiab-seal workflows los txo cov kev hloov pauv-ua rau poob.