1. Mahandra H., Singh R., Gupta B. (2018). Recycling of Zn-C and Ni-Cd spent batteries using Cyphos IL 104 via hydrometallurgical route. Volume-172. 133-142. DOI- 10.1016/j.jclepro.2017.10.129

2. Singh R., Mahandra H., Gupta B. (2017). Solvent extraction studies on cadmium and zinc using Cyphos IL 102 and recovery of zinc from zinc-plating mud. Volume-172. 11-18. DOI- 10.1016/j.hydromet.2017.06.017

3. Singh R., Mahandra H., Gupta B. (2017). Recovery of zinc and cadmium from spent batteries using Cyphos IL 102 via solvent extraction route and synthesis of Zn and Cd oxide nanoparticles. Volume-67. 240-252. DOI- 10.1016/j.wasman.2017.05.027

4. Kumar R., Rani M., Gupta H., Gupta B., Park D., Jeon B. (2017). Distribution of trace elements in flowing surface waters: Effect of seasons and anthropogenic practices in India. Volume-97. Issue-7. 637-656. DOI- 10.1080/03067319.2017.1339035

5. Mahandra H., Singh R., Gupta B. (2017). Liquid-liquid extraction studies on Zn(II) and Cd(II) using phosphonium ionic liquid (Cyphos IL 104) and recovery of zinc from zinc plating mud. Volume-177. 281-292. DOI- 10.1016/j.seppur.2016.12.035

6. Gupta H., Gupta B. (2016). Vehicular Tire as Potential Adsorbent for the Removal of Polycyclic Aromatic Hydrocarbons. 1-15. DOI- 10.1080/10406638.2016.1217890

7. Gupta H., Gupta B. (2016). Adsorption of polycyclic aromatic hydrocarbons on banana peel activated carbon. Volume-57. Issue-20. 9498-9509. DOI- 10.1080/19443994.2015.1029007

8. Gupta H., Gupta B. (2015). Photocatalytic degradation of polycyclic aromatic hydrocarbon benzo[a]pyrene by iron oxides and identification of degradation products. Volume-138. 924-931. DOI- 10.1016/j.chemosphere.2014.12.028

9. Kumar R., Rani M., Gupta B. (2015). Partitioning of trace elements in different components: Of a highly polluted urban river stretch in Delhi, India. Volume-57. Issue-2. 89-101.

10. Gupta B., Singh I., Mahandra H. (2014). Extraction and separation studies on Pt(IV), Ir(III) and Rh(III) using sulphur containing extractant. Volume-132. 102-109. DOI-10.1016/j.seppur.2014.04.045

11. Kumar R., Rani M., Gupta H., Gupta B. (2014). Trace metal fractionation in water and sediments of an urban river stretch. Volume-26. Issue-4. 200-209. DOI- 10.3184/095422914X14142369069568

12. Gupta B., Kumar R., Rani M. (2013). Speciation of heavy metals in water and sediments of an urban lake system. Volume-48. Issue-10.1231-1242. DOI- 10.1080/10934529.2013.776886

13. Gupta B., Singh I. (2013). Extraction and separation of platinum, palladium and rhodium using Cyanex 923 and their recovery from real samples. 11-18. DOI- 10.1016/j.hydromet.2013.01.001

14. Gupta B., Malik P., Irfan Z.B. (2013). Recovery of uranium, thorium and zirconium from allanite by extraction chromatography using impregnated chromosorb. Volume-4. 21-31. DOI- 10.1016/j.wri.2013.11.002

15. Gupta B., Rani M., Kumar R., Dureja P. (2012). Identification of degradation products of thiram in water, soil and plants using LC-MS technique. Volume-47. Issue-8. 823-831. DOI- 10.1080/03601234.2012.676487

16. Gupta B., Rani M., Salunke R., Kumar R. (2012). In vitro and in vivo studies on degradation of quinalphos in rats. 285-291. DOI- 10.1016/j.jhazmat.2012.01.089

17. Gupta B., Kumar R., Rani M., Agarwal T. (2012). Dynamics of toxic heavy metals in different compartments of a highly urbanized closed aquatic system. Volume-14. Issue-3. 916-924. DOI- 10.1039/c2em10505e

18. Gupta B., Rani M., Kumar R. (2012). Degradation of thiram in water, soil and plants: A study by high-performance liquid chromatography. Volume-26. Issue-1. 69-75. DOI- 10.1002/bmc.1627

19. Deep A., Kumar K., Kumar P., Kumar P., Sharma A.L., Gupta B., Bharadwaj L.M. (2011). Recovery of pure ZnO nanoparticles from spent Zn-MnO2 alkaline batteries. Volume-45. Issue-24. DOI-10551-10556. 10.1021/es201744t

20. Gupta B., Rani M., Kumar R., Dureja P. (2011). Decay profile and metabolic pathways of quinalphos in water, soil and plants. Volume-85. Issue-5. 710-716. DOI- 10.1016/j.chemosphere.2011.05.059

21. Gupta V.K., Gupta B., Rastogi A., Agarwal S., Nayak A. (2011). Pesticides removal from waste water by activated carbon prepared from waste rubber tire. Volume-45. Issue-13. 4047-4055. DOI- 10.1016/j.watres.2011.05.016

22. Gupta V.K., Gupta B., Rastogi A., Agarwal S., Nayak A. (2011). A comparative investigation on adsorption performances of mesoporous activated carbon prepared from waste rubber tire and activated carbon for a hazardous azo dye-Acid Blue 113. Volume-186. Issue-1. 891-901. DOI- 10.1016/j.jhazmat.2010.11.091

23. Gupta B., Begum I Z. (2008). Separation and removal of arsenic from metallurgical solutions using bis(2,4,4-trimethylpentyl)dithiophosphinic acid as extractant. Volume-63. Issue-1. 77-85. DOI- 10.1016/j.seppur.2008.04.002

24. Gupta B., Begum I. Z., Rajput G. (2008). Equilibrium and kinetic studies for the adsorption of Mn(II) and Co(II) from aqueous medium using Agar-Agar as sorbent. Volume-195. Issue-10. 1200-1212. DOI- 10.1080/00986440801905114

25. Gupta B., Mudhar N., Singh I. (2007). Separations and recovery of indium and gallium using bis(2,4,4-trimethylpentyl)phosphinic acid (Cyanex 272). Volume-57. Issue-2. 294-303.  DOI- 10.1016/j.seppur.2007.04.011

26. Gupta B., Mudhar N., Begum I Z., Singh I. (2007). Extraction and recovery of Ga(III) from waste material using Cyanex 923. Volume-87. Issue-2. 18-26. DOI- 10.1016/j.hydromet.2007.01.001

27. Gupta B., Ismail Z.B. (2006). Stabilization of solvent-impregnated resins (SIRs) by coating with water-soluble polymer and chemical cross-linking and its application in mercury removal. Volume-13. Issue-6. 487-506. DOI- 10.1163/156855406777408476

28. Gupta B., Mudhar N. (2006). Extraction and separation of germanium using cyanex 301/cyanex 923. Its recovery from transistor waste. Volume-41. Issue-3. 549-572. DOI- 10.1080/01496390500525021

29. Gupta B., Malik P., Mudhar N. (2005). Extraction and recovery of zirconium from zircon using Cyanex 923. Volume-23. Issue-3. 345-357. DOI- 10.1081/SEI-200050005

30. Gupta B., Mudhar N., Tandon B.N. (2005). Extraction and separation of gallium using cyanex 301: Its recovery from Bayer's liquor. Volume-44. Issue-6. 1922-1927.

31. Gupta B., Deep A., Singh V., Tandon S.N. (2004). Selective extractive spectrophotometric determination of cobalt using cyanex 923. Volume-11. Issue-4. 470-474.

32. Gupta B., Deep A., Malik P. (2004). Liquid-liquid extraction and recovery of indium using Cyanex 923. Volume-513. Issue-2. 463-471. DOI- 10.1016/j.aca.2004.02.036

33. Gupta B., Deep A., Tandon S.N. (2003). Recovery of cobalt from secondary sector using extraction in Cyanex 923. Volume-42. Issue-12. 2954-2958.

34. Gupta B., Deep A., Singh V., Tandon S.N. (2003). Recovery of cobalt, nickel, and copper from sea nodules by their extraction with alkylphosphines. Volume-70. Issue-3. 121.129. DOI- 10.1016/S0304-386X(03)00052-5

35. Gupta B., Malik P., Deep A. (2003). Solvent extraction and separation of tervalent Lanthanides and Yttrium using Cyanex 923. Volume-21. Issue-2. 239-258. DOI- 10.1081/SEI-120018948

36. Gupta B., Deep A., Tandon S.N. (2002). Recovery of chromium and nickel from industrial waste. Volume-41. Issue-12. 2948-2952.

37. Gupta B., Deep A., Malik P., Rajput S. (2002). Extraction chromatographic studies of Ti(IV) with Cyanex 301 as impregnant - Recovery from red mud. Volume-55. Issue-4. 235-237.

38. Gupta B., Deep A., Malik P., Tandon S.N. (2002). Extraction and separation of some 3d transition metal ions using Cyanex 923. Volume-20. Issue-1. 81-96. DOI- 10.1081/SEI-100108826

39. Gupta B., Deep A., Malik P. (2001). Extraction and recovery of cadmium using Cyanex 923. Volume-61. Issue-1. 65-71. DOI- 10.1016/S0304-386X(01)00157-8

40. Deep A., Malik P., Gupta B. (2001). Extraction and separation of Ti(IV) using thiophosphinic acids and its recovery from ilmenite and red mud. Volume-36. Issue-4. 671-685. DOI- 10.1081/SS-100102953

41. Deep A., Malik P., Gupta B., Tandon S.N. (2001). Efficient trivalent bath for the recovery of chromium. Volume-88. Issue-3. 76-77.

42. Singh R., Khwaja A.R., Gupta B., Tandon S.N. (1999). Extraction chromatographic studies of mercury(II) and some other metal ions on Chromosorb 102 loaded with triisobutylphosphine sulfide. Its application to industrial effluent. Volume-41. Issue-1. 23-37.

43. Singh R., Khwaja A.R., Gupta B., Tandon S.N. (1999). Extraction and separation of Nickel(II) using bis (2,4,4-trimethylpentyl) dithiophosphinic acid (Cyanex 301) and its recovery from spent catalyst and electroplating bath residue. Volume-17. Issue-2. 367-390.

44. Singh R., Khwaja A.R., Gupta B., Tandon S.N. (1999). Uptake and extraction chromatographic separation of mercury(II) by triisobutylphosphine sulfide (TIBPS) sorbed on silica gel and decontamination of mercury containing effluent. Volume-48. Issue-3. 527-535. DOI- 10.1016/S0039-9140(98)00275-6

45. Sahu R., Sondhi S.M., Gupta B. (1998). Extractive spectrophotometric determination of Pd(II) with 1-(2′aminoaryl)-4,4,6-trimethyl-1,4,5,6-tetrahydro-6-hydroxy pyrimidine-2-thiol. Volume-37. Issue-12. 1140-1143.

46. Sahu R., Sondi S.M., Gupta B. (1996). Extraction and separation of mercury using 1-(2′-aminoaryl)-4,4,6-trimethyl-1,4,5,6-tetrahydro-6-hydroxy pyrimidine-2-thiol (HPT) and its application to dental amalgam and medicinal sample. Volume-41. Issue-2. 293-300.

47. Sahu R., Sondhi S.M., Gupta B. (1996). 1-(2′-Amino aryl)-4,4,6-trimethyl-1,4,5,6-tetra hydro-6-hydroxy pyrimidine-2(3H) thione (HPT) as a ligand for the extraction and spectrophotometric determination of Fe(III). Volume-41. Issue-10. 695-701.

48. Sondhi S.M., Gupta B., Sahu R., Verma R.P. (1996). Reactions of 4-isothiocyanato-4-methyl-2-pentanone with substituted o-phenylenediamines and their kinetic studies. Volume-35. Issue-6. 572-577.

49. Sahu R., Sondhi S.M., Gupta B. (1995). Extraction and separation of mercury using 3,4,4a,5-tetrahydro-3, 3,4a-trimethyl-7-(substituted)-pyrimido [1,6-a] benzimidazole-1-thiol (PBT) and its application to industrial effluents. Volume-200. Issue-6. 509-520. DOI- 10.1007/BF02162500

50. Sahu R., Sondhi S.M., Gupta B. (1995). Extraction and spectrophotometric determination of Pd(II) with 3,4,4a,5-tetrahydro-3,3,4a-trimethyl-7-(substituted)-pyrimido(1,6-a)-benzimidazole-1-thiol (PBT). Volume-42. Issue-3. 401-405. DOI- 10.1016/0039-9140(95)01423-9

51. Saily A., Sahu R., Mohan D., Gupta B., Sondhi S.M. (1994). Determination of mineral elements in some medicinal plants used for the cure of various diseases. Volume-56. Issue-5. 186-189.

52. Sahu R.K., Magan A., Gupta B., Sondhi S.M. (1994). Reactions of 4-isothiocyanato-4-methyl-2- pentanone with amines having functional group at position and anti-inflammatory evaluation of resulting heterocyclic compounds. Volume-88. Issue-4. 45-51. DOI- 10.1080/10426509408036905

53. Singh J.M., Gupta B., Tandon S.N. (1981). Studies on the extraction of Mn(II) with anthranilic acid in the presence of β-picoline, pyridine and quinoline. Volume-43. Issue-8. 1863-1865. DOI- 10.1016/0022-1902(81)80399-5