loong chuen lee, hukil sino, nor azman mohd noor, saiful mohd ali and azhar abdul halim.  (2021).  prediction of the geographical origin of soils using ultra-performance liquid chromatography (uplc) fingerprinting and k-nearest neighbor (k-nn).  - 2nd international conference on artificial intelligence: advances and applications (icaiaa 2021).  1-12. 

loong chuen lee, hukil sino, nor azman mohd noor, saiful mohd ali, azhar abdul halim.  (2021).  predicting source of brown soils from proximity locations using random forests for forensic investigation.  - 12th international fundamental science congress (ifsc) 2021.  1-12. 

loong chuen lee, norazwani ali, nor azman mohd noor, saiful fazamil mohd ali, hukil sino, azhar abdul halim.  (2021).  evaluation of row-wise manipulations on uplc chromatogram to enhance discrimination of red soils.  - 4th analytical chemistry and separation sciences virtual event.  1. 

loong chuen lee, nadirah abd hamid, nor azman mohd noor, saiful fazamil mohd ali, hukil sino, azhar abdul halim.  (2021).  assessment of column-wise manipulations on uplc chromatograms of red soils.  - 4th analytical chemistry and separation sciences virtual event.  1. 

loong chuen lee, muhamad adib ahmad, nor azman mohd noor, saiful fazamil mohd ali, hukil sino, azhar abdul halim.  (2021).  comparing baseline correction algorithms in discriminating five brown soils.  - 4th analytical chemistry and separation sciences virtual event.  1. 

farah diyana binti ariffin;azhar bin abdul halim;normah bt. awang;mohd. sham bin othman;rogayah binti abu hassan @ mohamad;mazrura binti sahani;marlia binti mohd hanafiah;siti shahara binti zulfakar;muhammad ikram bin a wahab;chan kok meng;nur faizah bint.  (2020).  penilaian kitar hayat: rawatan air sisa daripada penternakan ikan keli di sungai melaka menggunakan azolla sp..  - .  . 

anuar ithnin;azhar bin abdul halim;farah diyana binti ariffin.  (2020).  kesan kualiti pencemaran udara dalaman sekolah yang didirikan berhampiran bekas tapak perlupusan sampah ke atas kesihatan pelajar sekolah di smk taman dato’ harun, petaling jaya, selangor.  - .  . 

farah diyana ariffin, prof. madya dr. azhar abdul halim, prof madya dr. marlia mohd hanafiah, prof. madya dr. normah awang, dr. mohd sham othman.  (2020).  jaringan penyelidikan kesihatan alam sekitar di antara sehap melaka dan ukm: rawatan air sisa daripada kolam penternakan ikan keli di sungai kesang.  - .  1-44. 

nurulhana nordin, azhar abdul halim, marlia mohd hanafiah, wan zuhairi wan yaacob.  (2020).  color removal of textile industry wastewater by adsorption using a potential hybrid composite carbon-graphite.  - international conference on earth sciences and environment 2020 (icemen2020).  1-4. 

siti shahara zulfakar, siti aida abd azman, shazlin aida mohamad shapie, nur faizah abu bakar, farah diyana ariffin & azhar abdul halim.  (2020).  bacterial contamination from selected catfish pond farming at sungai kesang, melaka and its susceptibility to antimicrobial agents.  - international conference on sciences, technology, education & management (instem) 2020 in conjunction with picoms science & management symposium (picomsam) 2020.  1-20. 

khairiatul mardiana jansar, marlia mohd hanafiah, azhar abdul halim.  (2020).  visual communication technique to enhance teaching and learning processes in quantitative analysis and instrumentation course.  - kongres dan pertandingan inovasi pengajaran dan pembelajaran 2020.  70. 

zulfakar, s.s, mohd shapie, s.a., abd azman, s.a, abu bakar, n.f., ariffin, f.d., abdul halim, a.  (2020).  characterization of bacterial strains isolated from selected aquaculture farm and its relationship with water quality index.  - malaysian applied biology society virtual seminar 2020.  1. 

nurul farahana kamaludin, nurul azimah naen, azhar abdul halim, normah awang, syazawani shamsudin.  (2020).  peranan kulit archidendron jiringa (jering) sebagai bahan penjerap logam berat kromium dalam air sisa industri.  - majalah impak siri 1/2020.  19. 

farah diyana ariffin, azhar abdul halim, marlia mohd hanafiah, normah awang, mohd sham othman, siti aida abd. azman, nur syafiqah mohd bakri.  (2019).  kesan pelepasan air sisa dari kolam penternakan ikan keli di sungai kesang, malaka terhadap alam sekitar.  - 5th nehap conference 2019.  1. 

siti shahara zulfakar, siti aida abd azman, nur faizah abu bakar, farah diyana ariffin and azhar abdul halim.  (2019).  bacterial contamination from selected catfish pond farming at sungai kesang, melaka and its susceptibility to antimicrobial agents.  - 9th international fisheries symposium 2019.  354. 

farah diyana ariffin, azhar abdul halim, marlia mohd hanafiah, normah awang, mohd sham othman.  (2019).  heavy metals concentration of african catfish pond farm's effluent.  - 12th international symposium of health sciences.  1. 

nurul farahana kamaludin, nurul azimah naen, normah awang, azhar abdul halim, norraphat uttraphan pim.  (2018).  the effectiveness of archidendron jiringa dried shell particles as chromium adsorbent through column adsorption study.  - the 15th symposium of malaysian society of applied biology 2018.  . 

lee khai ern;mazlin mokhtar;azhar bin abdul halim;jamaludin bin haji badusah;wan zawiah binti wan zin @ wan ibrahim;marlia binti mohd hanafiah;rahmah elfithri;goh choo ta;hassimi bin abu hasan.  (2018).  remediation of alur ilmu river water through phytoremediation.  - .  . 

mohan kumar, azhar abdul halim & marlia m. hanafiah.  (2018).  pollutants removal from sewage wastewater using palm oil fuel ash.  - international conference on clean water, air and soil (cleanwas).  . 

lee khai ern;mazlin mokhtar;mohd. raihan bin taha;azhar bin abdul halim;andrew kam jia yi;marlia binti mohd hanafiah;goh choo ta;lubna alam.  (2018).  responsible governance of chemical industries towards sustainability.  - .  . 

farah diyana arifin, azhar abdul halim, marlia m. hanafiah, normah awang & mohd sham othman.  (2018).  the effects of clarias gariepinus pond farming effluent on water quality parameters of kesang river in malacca, malaysia.  - international conference on clean water, air and soil (cleanwas).  . 

mohd hafiyyan mahmud, khai ern lee, mazlin mokhtar, thian lai goh, marfiah ab wahid, norbert simon, marlia mohd hanafiah, azhar abdul halim.  (2016).  spatial distribution of water quality index in a stormwater channel: a case study of alur ilmu, ukm bangi campus.  - international conference on environment and occupational health 2016.  . 

khai ern lee, marlia mohd hanafiah, azhar abdul halim, mohd hafiyyan mahmud.  (2015).  primary treatment of dye wastewater using aloe vera-aided aluminium and magnesium hybrid coagulants.  - international conference on environmental forensics 2015.  . 

azhar ah, nur hanani t, normah a, mohd talib l.  (2011).  boron removal from aqueous solution using turmeric extract aided coagulation-flocculation.  - proceeding of the 2nd international seminar on environmental health.  . 

azhar abdul halim, nor alia roslan, normah awang, mohd. hasamizi mustapa, mohd. fadzil arshad.  (2011).  boron removal in aqueous solutions using curcumin impregnated activated carbon.  - 10th international annual symposium (umtas 2011) - empowering science, technology and innovation towards a better tomorrow.  .