{"id":3805,"date":"2025-08-01T11:09:02","date_gmt":"2025-08-01T03:09:02","guid":{"rendered":"https:\/\/www.pgeneral.com\/?p=3805"},"modified":"2025-08-01T11:20:01","modified_gmt":"2025-08-01T03:20:01","slug":"determination-of-copper-in-graphite-powder-flame-atomic-absorption-spectrometry","status":"publish","type":"post","link":"https:\/\/www.pgeneral.com\/id\/applications\/determination-of-copper-in-graphite-powder-flame-atomic-absorption-spectrometry","title":{"rendered":"Penentuan Tembaga dalam Bubuk Grafit – Spektrometri Penyerapan Atom Api"},"content":{"rendered":"

1 Gambaran Umum Metode<\/h2>\n
Setelah sampel dicerna dengan aqua regia, penentuan dilakukan menggunakan api udara-asetilena pada panjang gelombang 324,7 nm dengan instrumen.<\/div>\n
\n

2 Instrumen dan Reagen<\/h2>\n

2.1 Instrumen dan Peralatan<\/h3>\n

2.1.1 Instrumen Deteksi<\/h4>\n
\n
\n\n\n\n\n\n\n\n
Nomor Serial<\/th>\nNama<\/th>\nKuantitas<\/th>\nPersyaratan Teknis<\/th>\nAksesoris<\/th>\n<\/tr>\n<\/thead>\n
1<\/td>\nSpektrofotometer Penyerapan Atom Api<\/td>\n1 set<\/td>\n<\/td>\nLampu katoda berongga tembaga<\/td>\n<\/tr>\n
2<\/td>\nAcetilena<\/td>\n1 silinder<\/td>\nKemurnian \u2265 99,99%<\/td>\n<\/td>\n<\/tr>\n
3<\/td>\nKompresor Udara<\/td>\n1 set<\/td>\nTekanan knalpot nominal: 0,3 MPa<\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

2.1.2 Peralatan Praperawatan<\/h4>\n
\n
\n\n\n\n\n\n\n\n\n\n\n
Nomor Serial<\/th>\nNama<\/th>\nKuantitas<\/th>\nPersyaratan Teknis<\/th>\nAksesoris<\/th>\n<\/tr>\n<\/thead>\n
1<\/td>\nHot Plate yang dikendalikan suhu<\/td>\n1 set<\/td>\nSuhu nominal: suhu kamar ~ 300 \u2103<\/td>\n<\/td>\n<\/tr>\n
2<\/td>\nKeseimbangan Elektronik<\/td>\n1 set<\/td>\nSensitivitas 0,1 mg<\/td>\n<\/td>\n<\/tr>\n
3<\/td>\nPerangkat Air Ultramurni<\/td>\n1 set<\/td>\n<\/td>\n<\/td>\n<\/tr>\n
4<\/td>\nMikropipet<\/td>\n1 masing-masing<\/td>\n20\u03bcL ~ 200\u03bcL; 100 \u03bcL ~ 1000 \u03bcL<\/td>\n<\/td>\n<\/tr>\n
5<\/td>\nKolos Volumetrik<\/td>\nBeberapa<\/td>\n100 ml<\/td>\n<\/td>\n<\/tr>\n
6<\/td>\nTabung Uji<\/td>\nBeberapa<\/td>\n25 ml<\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

2.2 Reagen<\/h3>\n

2.2.1 Reagen<\/h4>\n
\n
\n\n\n\n\n\n\n
Nomor Serial<\/th>\nNama<\/th>\nPersyaratan Teknis<\/th>\nPerkataan<\/th>\n<\/tr>\n<\/thead>\n
1<\/td>\nAsam Nitrat<\/td>\nkelas MOS<\/td>\n<\/td>\n<\/tr>\n
2<\/td>\nAsam hidroklorik<\/td>\nReagen yang dijamin<\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

2.2 Reagen yang disiapkan<\/h4>\n
\n
\n\n\n\n\n\n
Nomor Serial<\/th>\nNama<\/th>\nMetode Persiapan<\/th>\nPerkataan<\/th>\n<\/tr>\n<\/thead>\n
1<\/td>\n(1 99) Solusi Asam Nitrat<\/td>\nUkur 10 mL asam nitrat, perlahan-lahan tambahkan ke 990 mL air deionisasi, dan campur dengan baik<\/td>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

2.3 Standar<\/h3>\n

2.3.1 Solusi Saham<\/h4>\n
\n
\n\n\n\n\n\n
Nomor Serial<\/th>\nNomor<\/th>\nNama<\/th>\nPersyaratan Teknis<\/th>\nPerkataan<\/th>\n<\/tr>\n<\/thead>\n
1<\/td>\nInformasi tentang GBW08615<\/td>\nSubstansi Standar Solusi Elemen Tunggal Tembaga<\/td>\n1000\u03bcg \/ ml<\/td>\nInstitut Metrologi Nasional, Cina<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

3 Proses Operasi<\/h2>\n

3.1 Pengolahan Sampel<\/h3>\n

3.1.1 Persiapan Solusi Uji<\/h4>\n
Tingkatkan 0,25 g sampel, akurat hingga 0,00001 g, ke dalam tangki pencernaan. Tambahkan 3 ml asam nitrat terkonsentrasi dan 9 ml asam klorhidrat terkonsentrasi, tutup dan ketat tangki pencernaan, dan masukkan ke dalam instrumen pencernaan gelombang mikro untuk pencernaan. Siapkan kosong dengan cara yang sama. Setelah pendinginan, saring dan cairkan ke volume dalam botol volumetrik 25 mL, dan taruh di mesin untuk pengujian.<\/div>\n

 <\/p>\n

Program Pemanasan Gelombang Mikro<\/div>\n

 <\/p>\n

\n
\n\n\n\n\n\n\n\n\n\n
Langkah<\/th>\nsuhu \/ \u2103<\/th>\nMemegang Waktu \/ menit<\/th>\n<\/tr>\n<\/thead>\n
1<\/td>\n100<\/td>\n3<\/td>\n<\/tr>\n
2<\/td>\n120<\/td>\n3<\/td>\n<\/tr>\n
3<\/td>\n140<\/td>\n3<\/td>\n<\/tr>\n
4<\/td>\n160<\/td>\n3<\/td>\n<\/tr>\n
5<\/td>\n180<\/td>\n30<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

3.1.2 Persiapan Solusi Standar<\/h4>\n
    \n
  1. Persiapan seri standar tembaga: Pipet secara akurat 0,0, 0,025, 0,05, 0,1, dan 0,2 mL larutan standar tembaga (1000\u03bcg \/ mL) masing-masing ke dalam botol volumetrik 100 mL, cairkan ke tanda dengan (1 99) asam nitrat, dan campur dengan baik. Konsentrasi massa larutan seri standar ini masing-masing 0,0, 0,25, 0,5, 1,0, dan 2,0 \u03bcg \/ mL.<\/li>\n<\/ol>\n

    3.2 Pengujian Sampel<\/h3>\n
      \n
    1. Kondisi Uji Kondisi Referensi untuk Deteksi Spektrofotometer Penyerapan Atom Api<\/li>\n<\/ol>\n

       <\/p>\n

      \n
      \n\n\n\n\n\n\n\n\n\n\n\n
      Elemen<\/th>\nTembaga<\/th>\n<\/tr>\n<\/thead>\n
      Panjang gelombang (nm)<\/td>\n324.7<\/td>\n<\/tr>\n
      Lebar Band Spektral (nm)<\/td>\n0.4<\/td>\n<\/tr>\n
      Alat lampu saat ini (mA)<\/td>\n3.0<\/td>\n<\/tr>\n
      Tinggi Gas Bahan Bakar (mm)<\/td>\n6<\/td>\n<\/tr>\n
      Tingkat Aliran Gas Bahan Bakar (mL \/ min)<\/td>\n1400<\/td>\n<\/tr>\n
      Tekanan Kompresor Udara (MPa)<\/td>\n0.22<\/td>\n<\/tr>\n
      Metode Koreksi Latar Belakang<\/td>\nTidak ada<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<\/div>\n

       <\/p>\n

        \n
      1. Pengujian Sampel Sesuaikan instrumen dengan keadaan kerja terbaik, menyalakan api, menyesuaikan laju aliran gas bahan bakar, menguji standar dan solusi sampel secara berurutan, membaca data, memasukkan berat sampel, dan memeriksa dan merekam hasilnya.<\/li>\n<\/ol>\n

        3.3 Perhitungan Hasil<\/h3>\n
        \"\"<\/div>\n

         <\/p>\n

        Di mana:<\/div>\n
        X — Kandungan tembaga dalam sampel, satuan adalah miligram per kilogram (mg \/ kg);<\/div>\n
        \u03c1 — Konsentrasi massa tembaga dalam larutan sampel yang akan diuji, mikrogram per mililiter (\u03bcg \/ mL);<\/div>\n
        \u03c1\u2080– Konsentrasi massa tembaga dalam larutan kosong, mikrogram per mililiter (\u03bcg \/ mL);<\/div>\n
        f — Faktor pengenceran larutan pencernaan sampel;<\/div>\n
        Di — Total volume larutan pencernaan sampel, satuan adalah mililiter (mL);<\/div>\n
        m — Massa sampel, satuan adalah gram (g);<\/div>\n<\/div>","protected":false},"excerpt":{"rendered":"

        1 Method Overview After the sample is digested with aqua regia, the determination is carried out using an air-acetylene flame at a wavelength of 324.7 nm with the instrument. 2 Instruments and Reagents 2.1 Instruments and Equipment 2.1.1 Detection Instruments Serial Number Name Quantity Technical Requirements Accessories 1 Flame Atomic Absorption Spectrophotometer 1 set Copper […]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[81,36],"tags":[],"class_list":["post-3805","post","type-post","status-publish","format-standard","hentry","category-petrochemical-and-chemical","category-applications"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.pgeneral.com\/id\/wp-json\/wp\/v2\/posts\/3805","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.pgeneral.com\/id\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.pgeneral.com\/id\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.pgeneral.com\/id\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/www.pgeneral.com\/id\/wp-json\/wp\/v2\/comments?post=3805"}],"version-history":[{"count":0,"href":"https:\/\/www.pgeneral.com\/id\/wp-json\/wp\/v2\/posts\/3805\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.pgeneral.com\/id\/wp-json\/wp\/v2\/media?parent=3805"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.pgeneral.com\/id\/wp-json\/wp\/v2\/categories?post=3805"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.pgeneral.com\/id\/wp-json\/wp\/v2\/tags?post=3805"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}